The international influence of United States veterinary medicine.
D006077:Government Agencies; D049672:History, 19th Century; D049673:History, 20th Century; D007391:International Cooperation; D012582:Schools, Veterinary / Q000266:history; D014481:United States; D014730:Veterinary Medicine / Q000266:history*; D014731:Veterinary Service, Military / Q000266:history