Zoo medicine: yesterday and today.
D000818:Animals; D000836:Animals, Zoo; D003226:Congresses as Topic / Q000266:history; D005060:Europe; D049672:History, 19th Century; D049673:History, 20th Century; D010506:Periodicals as Topic / Q000266:history; D012013:Reference Books; D012952:Societies / Q000266:history; D014481:United States; D014730:Veterinary Medicine / Q000266:history*