Veterinarians in zoo medicine: the evolution of a career.
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D000818:Animals; D000836:Animals, Zoo; D049673:History, 20th Century; D049690:History, Ancient; D049692:History, Early Modern 1451-1600; D049691:History, Medieval; D049711:History, Modern 1601-; D018634:Veterinarians / Q000266:history*; D014730:Veterinary Medicine / Q000266:history*