Starting in 1996, Alexa Internet has been donating their crawl data to the Internet Archive. Flowing in every day, these data are added to the Wayback Machine after an embargo period.
Welcome to our Publications Catalog online. This section allows you to access publications online, as well as obtain information on ordering hard copies of NIDA publications. We also have special information about Spanish language publications. Materials in this section are public domain and may be reproduced, unless otherwise noted.