When William C. Miller began the dictionary in 1928, he modelled it on Black's Medical Dictionary, and reflected that in the name. The 20th edition has been extensively revised to incorporate developments in veterinary science, practice, and regulation since 1998. New information is provided about BSE, foot-and-mouth disease, tuberculosis in cattle and the possible link of its rise to the badger population, antibiotic use and the increase in micro-organisms, new British quarantine regulations, European Union regulations on animal welfare and husbandry, genetic engineering, and other areas. The orientation remains predominately British. Pronunciation is not indicated. There is extensive cross-referencing but no index. Previous editions were cited in Books for College Libraries, 3d ed. c. Book News Inc.