General Topics
How to View Portable Document Format (.pdf) Files.
Some files on the Web site are provided in Portable Document Format (.pdf). For more information on how to access these files, go to EPA's PDF page (http://www.epa.gov/epahome/pdf.html).
What is the Administration Menu Item?
The Administration menu item is a password-protected link for use by the support staff to review and respond to public comments and maintain other administrative information.
What is the Glossary of Registry Terms?
The Glossary is an alphabetical list of terms and definitions used in the registries. These terms and definitions provide information to assist in understanding and using the registries.
What is a Metadata Registry?
A metadata registry is a tool for managing shareable data - a comprehensive, authoritative source of reference information about data. It does not contain the actual data, but provides information on the definition, origin, source, and location of data. It supports the standard-setting process by recording and disseminating data standards, which facilitates data sharing among organizations and users. The registry provides links to supporting information about the metadata. When used in conjunction with an information database, the registry makes the obtained information more understandable and meaningful. Specified and standardized data enhances its usefulness and shareability.
What is the System of Registries?
The System of Registries (SoR) is a centralized gateway providing access to the Environmental Protection Agency's (EPA) core registry systems. The SoR supports the Agency's environmental network by uniquely identifying objects of interest to EPA, including chemicals, biological organisms, facilities, as well as data elements, XML tags, and data sets that are managed by the Agency.
What registries are part of the System of Registries?
The following registries are part of the System of Registries:
The Environmental Data Registry (EDR) is a comprehensive, authoritative source of reference information about environmental data. The EDR catalogs the Environmental Protection Agency's (EPA) major data collections and helps locate environmental information of interest. It does not contain the environmental data itself, but rather provides information on the definition, origin, source, and location of environmental data. It is also the major tool supporting the Agency's standard-setting process by recording and disseminating Agency standards, and facilitating data sharing among organizations and users.
The Environmental Information Management System (EIMS) contains descriptive information (metadata) on scientific data sets, including remote sensing data, Geographic Information System (GIS) coverages, databases, documents, models, and multimedia. The EIMS Search allows query by Information Type, Subject/Keyword, Cross Partner Collection, or EIMS Partner.
The Facility Registry System (FRS) is a centrally managed database that identifies facilities, sites, or places subject to environmental regulations or of environmental interest. This site is the companion to the
FRS integrated searches in
Envirofacts, a single point of access to select U.S. EPA environmental data. Envirofacts provides access to several EPA databases to provide you with information about environmental activities that may affect air, water, and land anywhere in the United States.
The Registry of EPA Applications and Databases (READ) is an authoritative source of information about Environmental Protection Agency (EPA) application systems and other information resources. Information is available on a diverse set of resources including computer application systems, databases, and models.
The Substance Registry System (SRS) serves as the nucleus for linking information about substances regulated by the Environmental Protection Agency (EPA). Information is available by Chemical Abstract Service Registry Number (CASRN), Taxonomic Serial Number, ICTVdB Identifier, chemical name, biological name, physical property, regulation, or data source.
The Terminology Reference System (TRS) has been created by the Environmental Protection Agency (EPA) to provide a single resource of environmental terminology for the Agency by compiling collections of terms from EPA and other sources. The TRS has the capability to search alphabetically, by text or text string, or by source. A definition is displayed for each term. Contextual definitions and hierarchical relationships, where they exist, are also displayed in the TRS.
What is the Environmental Metadata Gateway?
Computer system developers and managers in EPA programs and EPA partner organizations can build linkages to the EDR and its component applications that automatically query data with the Environmental Metadata Gateway Portal. A search has been developed that enables users to build URLs that automatically query various substance data and display the appropriate detail information from EPA's application Substance Registry System (SRS), which now contains data about chemical substances and
biological organisms that were once contained in the Chemical Registry System (CRS) and the Biology Registry System (BioRS).
What is MetaPro?
MetaPro is a tool that enables users to create their own metadata registries and was designed to foster the exchange of metadata and encourage reuse of metadata attributes of data elements and value domains. MetaPro hosted version is available.
The MetaPro hosted version uses Unix. It was developed and maintained in Oracle Designer. This implementation implements the ISO/IEC 11179-3:2003 standard. It also runs most of the registries in the EPA System of Registries. This software is Government developed software. It is freely available for use throughout the government. It is copyrighted. Anyone may obtain a copy but they must acknowledge the copyright in any use of the software.
For more information, contact Larry Fitzwater, EPA Office of Environmental Information, at 202-566-1653 or Fitzwater.Larry@epa.gov.
What was MetaPro Distributable Version?
The MetaPro Distributable Version software for the PC (Access 97) was based upon an early draft version of the ISO/IEC 11179:2003 standard. MetaPro's database design was based upon the current version of the metamodel for shareable data, which was set forth in the American National Standards Institute (ANSI) X.3.285 standard (November 1999) and which was superseded by ISO/IEC 11179:2003 Information technology -- Metadata Registries (MDR) - Part 3, Registry Metamodel and basic attributes. MetaPro Distributable Version was never updated. It is no longer distributed.
There is an Open Source version of ISO/IEC 11179-3:2003 that is being developed by the European Environment Agency (EEA). The EEA tool is available at http://www.eionet.eu.int/software/datadict
Registry Search Descriptions
The following provides general descriptions of the types of searches that are available in the registries. The registry in which the search can be used is in parenthesis.
Alternate Identifier Search
An Alternate Identifier Search can be limited to a specific type of identifier by selecting an Alternate ID Type. (SRS)
Application Inventory Search
Use the EPA Organization, Application Type and Status, or System Characteristics to search for a list of "Data System" information resources. (READ)
Contact Search
Use the Contact Search for a list of people related to Information Resources. (READ)
Data Element Search
Use the Data Element Search to locate data element metadata in the Environmental Data Registry. (SoR)
Identifier Number Search
Use the Identifier Number Search to find substances of interest by entering the identifier number and selecting an identifier type. (SRS)
Information Resource Search
Use the Information Resource Search to find computer application systems, Web sites, databases, models, and data sets by keyword or text string in the Registry of EPA Applications and Databases (READ). The list of available Information Resource Types will vary depending on the registry in which the search is being done. (SoR, READ, EDR, SRS, TRS)
Metadata Search
Use Metadata Search for specific information on conceptual domain, contact, data concept, data element, derivation rule, object class, permissible values, property representation class, value domain, and value meaning. (EDR)
Name Search
Use the Name Search to search for substances by name and synonym. (SRS)
Organization Search
Use the Organization Search to find groups that have responsibility for registry information. (SoR, READ, EDR, SRS, TRS)
Searches Using Lists
Searches are available that provide the ability to perform union, intersection, difference, and minus functions on lists of substances from any of the sources in the Information Resource boxes. (SRS)
SoR Quick Search
Use the SoR Quick Search to retrieve information from one of the SoR applications by search option (e.g., data element or substance) and keyword/identifier. (SoR)
Substance Search
Use the Substance Search to find chemical identification information, biological taxonomy information, and other substance information (e.g., pH, analytes). (SoR)
Terminology Search
Use the Terminology Search to query the Terminology Reference System (TRS) for environmental terminology by keyword or text string.
Text Search
Use the Text Search to query metadata records with names and definitions by keyword or text string. (EDR, TRS)
XML Tag Search
Use the XML Tag Search to find XML tags related to data elements or other information resources. (EDR)
Searches Using Lists
Several searches can be done that combine, intersect, or subtract lists of substances from two or more information resources. The dark areas in the graphics indicate the answer that will be returned when the search type is used.
Union, Intersection, Difference, or Minus
The graphics below represent the list operations on two lists. Two or more information resources may be chosen. List operations on multiple lists can be visualized by adding an additional circle for each list selected. If more that two lists are selected, a union will be a list of unique substances in all the sources, an intersection will be a list of substances in common across all the selected sources, and a difference will be a list of substances that are not in common across all of the selected sources.
The dark areas in the graphics indicate the answer that will be returned when the search type is used.
 | Union - a list of substances found in any of the selected resources (e.g., A + B). |
 | Intersection - a list of substances that are in common across the selected resources (e.g., A intersects B). |
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Difference - a list of substances that are not in common across the selected resources (e.g., (A + B) - (A intersects B)). |
| To use these types of searches:
- To choose the lists to be used, press the Control key and highlight the resources to be used in the Information Resource box under Union, Intersection, or Difference section.
- Choose the search option to be performed on the lists from the buttons below the Information Resource box. Select either Union, Intersection, or Difference.
- Indicate the sort order for the resulting list. A list may be displayed in Name or CAS Number order.
- Use the Begin Search button to initiate the process.
- To begin a new search, use the Clear and Start Over button to remove resource selections and reset defaults.
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 | Minus - a list of substances remaining when the selected resources are subtracted (e.g., A - B). |
| The minus type of search subtracts list B from list A. The results will be the substances in list A that are not in list B as noted in the shaded area of the graphics. Either list A or list B may be composed of more than one list. If more that one selection is made in an information resource box, the lists will be joined using the union search type illustrated above before the minus operation is done.
To use these type of search:
- Choose the information resources to be included in list A form the first information resource box. If more than one resource is to be included, press the Control key and highlight multiple resources.
- Choose the information resources to be included in list B from the second information resource box. If more than one resource is to be included, press the Control key and highlight multiple resources.
- Indicate the sort order for the resulting list. A list may be displayed in Name or CAS Number order.
- Use the Begin Search button to initiate the process.
- To begin a new search, use the Clear and Start Over button to remove resource selections and reset defaults.
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Looking for More Environmental Information?
The SoR provides links to other sources of general environmental information. The following EPA Information Resources may help you find additional information maintained within the Agency. The Other Related Information Resources provides links to environmental information maintained by organizations outside EPA.
EPA Information Resources
EPA Information Resources (http://www.epa.gov/epahome/resource.htm) contains links to many EPA information resources including libraries and information centers, hotlines and clearinghouses, dockets, publications, newsletters and listservs, Freedom of Information Act (FOIA) office, environmental quality, databases and software, test methods and models, and Frequently Asked Questions.
Contact the EPA (http://www.epa.gov/epahome/comments.htm) for questions, comments, international requests, and technical problems. EPA's Information Resources Center can offer assistance in finding general EPA and environmental information.
Search the U.S. EPA Web (http://www.epa.gov/epahome/search.html) is a query page to find topics of interest, links to other EPA sites, EPA staff, publications, and provides searches by ZIP code to locate community information.
ENVIROFACTS (http://www.epa.gov/enviro/index.html) a data warehouse that integrates data extracted from EPA major program systems.
Office of Air and Radiation (OAR) (http://www.epa.gov/oar/oarhome.html) deals with issues that affect indoor and outdoor air quality, stationary and mobile sources of air pollution, radon, acid rain, stratospheric ozone depletion, radiation protection, and pollution prevention. The OAR home page contains links to the OAR Comments page, Frequently Asked Questions, and many other OAR-related topics.
Office of Pesticides, Pollution and Toxics Chemicals in the Environment (http://www.epa.gov/opptintr/chemfact/) is an index to a list of Chemical Fact Sheets and Chemical Summaries. Links are provided to the actual fact sheet or summary for each substance listed.
Office of Pollution Prevention and Toxic Substances (OPPT) (http://www.epa.gov/opptintr/) develops national strategies for toxic substance control, promotes pollution prevention, and supports the public's right to know about chemical risks. The OPPT home page contains links to many information resources (such as the OPPT Chemical Library and the Toxic Substances Control Act (TSCA) Assistance Information Service), databases and software, and publications.
Office of Solid Waste and Emergency Response (OSWER) (http://www.epa.gov/swerrims/) provides policy, guidance, and direction for the land disposal of hazardous wastes, underground storage tanks, solid waste management, encouragement of innovative technologies, source reduction of wastes, and the Superfund Program. The OSWER home page contains links to many OSWER information resources including the Office of Solid Waste (OSW) home page, the Chemical Emergency Preparedness and Prevention Program (CEPPO) home page, and Resource Conservation and Recovery Act (RCRA), Superfund, and Emergency Planning and Community Right-to-Know Act (EPCRA) hotline.
Office of Water (OW) (http://www.epa.gov/ow/) is responsible for the Agency's water quality activities including development of national programs, technical policies, and regulations relating to drinking water, water quality, ground water, pollution source standards, and the protection of wetlands, marine, and estuarine areas. The OW home page contains links to the Water Online Reference Library, information services (such as the Office of Water Resource Center, Safe Drinking Water Hotline), and databases and software.
Office of Water Miscellaneous Documents (http://www.epa.gov/OST/) provides a variety of information for public use. This information may include guidance documents, rules and regulations, fact sheets about rules, regulations and programs, videotapes, newsletters, posters, brochures, and pamphlets.
Oil Program (http://www.epa.gov/oilspill/index.htm) Web site provides information about the U.S. EPA's program for preventing, preparing for, and responding to oil spills that occur in and around inland waters of the United States. Oil spill prevention measures include bioremediation techniques involving the use of nutrients to enhance the activity of indigenous organisms and/or the addition of naturally-occurring non-indigenous microorganisms.
Other Related Information Resources
Disclaimer: The following Web sites are not maintained by EPA, but are provided as a reference for Web users. EPA is responsible for neither the informational content nor for the operation of these sites. The views and opinions of authors expressed at these sites do not necessarily state or reflect those of the United States Government and shall not be used for advertising or product endorsement purposes. 
General References
Dublin Core (http://www.dublincore.org/) is an open forum engaged in the development of
interoperable online metadata standards that support a broad range of purposes and business
models.
General Multilingual Environmental Thesaurus (GEMET) (http://www.mu.niedersachsen.de/cds/etc-cds_neu/software.html#GEMET) is an indexing, retrieval and control tool for the European Topic Centre on Catalogue of Data Sources (ETC/CDS) and the European Environment Agency (EEA), Copenhagen. GEMET was conceived as a "general" thesaurus used to define a common general language and a core of general terminology for the environment. This Website enables the download of GEMET in several formats.
ISO/IEC JTC 1 / SC 32 / WG 02 - Metadata Standards (http://metadata-stds.org/) ISO/IEC JTC1 SC32 WG2 is the working group that develops international standards for metadata and related technologies. EDR is based on International and National Standards ISO 11179 Information Technology - Specification and Standardization of Data Elements and the ANSI X3.285 Metamodel for the Management of Shareable Data Standards.
Substance-Related Information Resources
CAS, Chemical Abstracts Service (http://info.cas.org/), is the producer of the world's largest and most comprehensive databases of chemical information.
Integrated Taxonomic Information System (ITIS) (http://www.itis.usda.gov/), maintained through a partnership of U.S., Canadian, and Mexican agencies, other organizations, and taxonomic specialists cooperating on the development of an online, scientifically credible, list of biological names focusing on the biota of North America.
International Committee on Taxonomy of Viruses Database (ICTVdB) (http://www.ncbi.nlm.nih.gov/ICTVdb/) is a database that supports virus classification and nomenclature maintained by the International Committee on Taxonomy of Viruses (ICTV). In the future, ICTVdB viral data will be incorporated into the SRS.
California Environmental Protection Agency, Department of Pesticide Regulation (http://www.cdpr.ca.gov/docs/epa/epamenu.htm) provides queries for EPA's Office of Pesticide Programs (OPP) Pesticide Product Information Databases: Registered and Canceled Pesticide Product Database Chemical Ingredients Database (Chemical Nomenclature, Current Products and Registrants), Company Information Database).
EPA Reference Dose Tracking Report (http://ace.orst.edu/info/nptn/tracking.htm) is a semiannual report prepared by the U.S. Environmental Protection Agency's Office of Pesticide Programs. The report contains pesticide toxicology data from the Health Effects Division such as RfD, NOEL, LEL, carcinogenicity, and laboratory animal effects.
EPA Region III Risk-Based Concentration Table (http://www.epa.gov/reg3hwmd/risk/index.htm) is used by Region III toxicologists to screen sites not yet on the NPL, respond rapidly to citizen inquiries, and spot-check formal baseline risk assessments. They are used primarily for chemical screening during baseline risk assessment. The table does not constitute regulation or guidance and should not be viewed as a substitute for a site-specific risk assessment.
EPA Region VI Human Health Medium-Specific Screening Levels (http://www.epa.gov/earth1r6/6pd/rcra_c/pd-n/screen.htm) address common human health exposure pathways. They do not consider all potential human health exposure pathways nor address ecological concerns. The comparison of preliminary investigation data against risk-based media concentrations provides for an initial evaluation for the relative environmental concern for a site or set of environmental data. This site provides a table that was generated as a technical tool.
EPA Region IX Preliminary Remediation Goals (http://www.epa.gov/region09/waste/sfund/prg/index.htm) are tools for evaluating and cleaning up contaminated sites. They are risk-based concentrations derived from standardized equations, combining exposure information assumptions and EPA toxicity data. The PRGs contained in the Region 9 PRG Table are generic; they are calculated without site specific information. PRGs are used for site "screening" and as initial cleanup goals if applicable. They are not de facto cleanup standards. However, they are helpful in providing long-term targets to use during the analysis of different remedial alternatives, and may enable design staff to streamline the consideration of remedial alternatives.
EXTOXNET's Pesticide Information Profiles (PIPs) (http://ace.orst.edu/info/extoxnet/pips/ghindex.html) are documents that provide specific pesticide information relating to health and environmental effects. EXTOXNET Infobase, a cooperative effort of University of California-Davis, Oregon State University, Michigan State University, Cornell University, and the University of Idaho, provides a variety of information about pesticides. Primary files are maintained and archived at Oregon State University. PIPs are not based on an exhaustive literature search. The information does not in any way replace or supersede the information on the pesticide product labeling or other regulatory requirements.
IUPAC Compendium of Chemical Terminology
(http://www.iupac.org/publications/compendium/index.html) is a guide to chemical terminology and contains glossaries of terms in chemistry areas such as stereochemistry, photochemistry, organic class names, atmospheric chemistry, catalysis, biotechnology, chromatography, toxicology, and bioanalytical chemistry.
Kimball's Biology Pages (http://www.ultranet.com/~jkimball/BiologyPages/) is an online biology textbook of alphabetized lists of biological terms (the index/glossary) with links to discussions, often illustrated, of wide-ranging biological topics.
National Biological Information Infrastructure (NBII) (http://www.nbii.gov/) is a collaborative program that provides increased access to data and information on the nation's biological resources. NBII partners and collaborators develop standards, tools, and technologies that make it easier to find, integrate, and apply biological resources information.
National Center for Biotechnology Information (NCBI) (http://www.ncbi.nlm.nih.gov/) is maintained by the National Library of Medicine (NLM) at the National Institutes of Health (NIH). NCBI contains public databases such as GenBank, the NIH genetic sequence database, the NCBI taxonomy database, and the Molecular Modelling Database.
National Institute for Occupational Safety and Health (NIOSH) Criteria Documents for Occupational Exposure Standards (http://www.cdc.gov/niosh/critdoc2.html) are developed primarily for the U.S. Department of Labor Occupational Safety and Health Administration (OSHA) and Mine Safety and Health Administration (MSHA). They are also distributed to health professionals in academia, industry, organized labor, public interest groups, and other federal, state, and local government agencies. The documents provide the basis for the comprehensive occupational safety and health standards. They contain a critical review of the scientific and technical information available on the prevalence of hazards, the existence of safety and health risks, and the adequacy of methods to identify and control hazards.
National Park Service Environmental Contaminants Encyclopedia (http://www1.nature.nps.gov/toxic/index.html) contains summaries of issues concerning environmental toxicology on nearly one hundred twenty environmental contaminants. Reports summarize data that include general hazard and toxicity, carcinogenicity, developmental, fate, metabolism, and water data interpretation.
National Pesticide Information Center (http://npic.orst.edu/) is a joint project between Oregon State University and the U.S. EPA. It is a source of factual chemical, health, and environmental information about more than 600 pesticide active ingredients incorporated into over 50,000 different products registered for use in the United States since 1947. It includes Pesticide Information Profiles (http://ace.orst.edu/info/extoxnet/pips/ghindex.html) which are documents that provide specific pesticide information relating to health and environmental effects; Pesticide Fact Sheets (http://ace.orst.edu/info/nptn/nptnfact.htm) which are intended to be educational in nature and helpful to consumers making decisions about pesticide use; and links to many other sites, including the OSU Extension Pesticide Properties Database (http://ace.orst.edu/info/nptn/ppdmove.htm) and the U.S. EPA Reference Dose Tracking Report (http://ace.orst.edu/info/nptn/tracking.htm).
National Safety Council Chemical Backgrounders (http://www.nsc.org/library/chemical/chemical.htm) are fact sheets that provide background information on over one hundred hazardous chemicals. They include such information as physical description, chemical properties, health effects, exposure values, economics, relevant regulations, NIOSH and OSHA exposure limits, and information resources.
NIOSH International Chemical Safety Card (ICSC) (http://www.cdc.gov/niosh/ipcs/ipcscard.html) summarizes essential health and safety information on chemicals for their use at the "shop floor" level by workers and employers in factories, agriculture, construction and other work places. ICSCs are not legally binding documents, but consist of a series of standard phrases, mainly summarizing health and safety information collected, verified and peer reviewed by internationally recognized experts, taking into account advice from manufacturers and Poison Control Centres. They offer a basic tool to supply the workers with information on the properties of the chemicals that they use. They can also be useful in the training of workers possibly undertaken by employers. Finally, the cards might be the principal information resource in less developed areas or in small and medium size enterprises, as regards both management and workers.
Occupational Safety and Health Administration (OSHA) Chemical Sampling and Analytical Methods (http://www.osha-slc.gov/SLTC/samplinganalysis/index.html) are used by occupational health and safety professionals to assess workplace contaminants and associated worker exposures. The validity of an assessment is based, in part, on the procedures used for sample collection and analysis, and data interpretation. In many instances these procedures use approaches that have been refined over many years and are accepted by the professionals as good practice. However, the multitude of variables within a specific workplace require the professional to exercise judgment in the design of a particular assessment.
Occupational Safety and Health Administration (OSHA) Chemical Sampling Information (http://www.osha-slc.gov/dts/chemicalsampling/toc/toc_chemsamp.html) presents, in concise form, data on a large number of chemical substances that may be encountered in industrial hygiene investigations. It is intended as a basic reference for industrial hygienists engaged in OSHA field activity.
PLANTS Database (http://plants.usda.gov/) is a single source of standardized information about plants. This database focuses on vascular plants, mosses, liverworts, hornworts, and lichens of the U.S. and its territories. The PLANTS Database includes names, checklists, automated tools, identification information, species abstracts, distributional data, crop information, plant symbols, plant growth data, plant materials information, plant links, references, and other plant information.
Pesticide Action Network Pesticide Database (http://www.pesticideinfo.org/) provides a one-stop location for current toxicity and regulatory information for pesticides. The web site offers a diverse array of information on pesticides from many different sources. To ensure accurate data, anecdotal evidence of any sort is not used on the PAN web site. All information is backed up by rigorous scientific studies and most is taken from official sources. When official lists do not exist, a variety of original data sources that refer to the peer-reviewed scientific literature are presented.
The Right-to-Know Network (RTK NET) (http://www.rtk.net/) provides free access to several EPA databases, text files, and conferences.
Species 2000 (http://www.sp2000.org/) has the objective of enumerating all known species of plants, animals, fungi and microbes on Earth as the baseline dataset for studies of global biodiversity. It will also provide a simple access point enabling users to link from here to other data systems for all groups of organisms, using direct species-links.
Toxicology Excellence for Risk Assessment (TERA) (http://www.tera.org/) is a non-profit corporation dedicated to the best use of toxicity data for risk assessment. TERA was founded in 1995 by Dr. Michael Dourson, a board-certified toxicologist with 15 years experience working for the U.S. Environmental Protection Agency (EPA). TERA helps environmental, industry, and government groups find common ground through the application of good science to risk assessment.
TOXNET, the Toxicology Data Network (http://sis.nlm.nih.gov/), maintained by the U.S. National Library of Medicine, provides access to a number of databases on toxicology, hazardous chemicals, and related areas including the Integrated Risk Information System (IRIS), the Hazardous Substances Data Bank (HSDB), and the Chemical Carcinogenesis Research Information System (CCRIS). TOXNET also links to chemical identification information including ChemIDplus, the Chemical Identification File, which has numerous chemical synonyms, structures, regulatory list information and links to other databases containing information about the chemicals.
USDA Agricultural Research Service Pesticide Properties Database (http://www.arsusda.gov/ppdb.html) is a compendium of chemical and physical properties of 334 widely used pesticides. It was developed to provide water quality modelers and managers a list of the pesticide properties most important for predicting the potentials of pesticides to move into ground and surface waters under a range of weather and soil conditions. Information included in the database focuses on 16 of the most important properties that affect pesticide transport and degradation characteristics. The database is administered by the Alternate Crops & Systems Laboratory in Beltsville, Maryland, which has the responsibility for adding pesticides and new data as they become available.
U.S. Department of Agriculture, Forest Service Pesticide Fact Sheets (http://infoventures.com/e-hlth/pestcide/pest-fac.html) are issued by the Forest Service for their workers and the general public. Each fact sheet provides information on forest and land management uses, environmental and human health effects, and safety precautions for various pesticides and their formulations. Unless otherwise stated, the toxicity data presented in these fact sheets refer to the active ingredient.
Zoological Record (http://www.biosis.org/products_services/zoorecord.html) index and guide to internet resources in the zoological and other related life sciences of interest to zoologists.
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