title: Letter-Krook.
authors.forename: Joseph P
authors.initials: JP
authors.lastname: Whalen
mesh_terms: D000820:Animal Diseases / Q000266:history*; D000818:Animals; D049673:History, 20th Century; D049674:History, 21st Century; D009518:New York; D018634:Veterinarians / Q000266:history*; D014730:Veterinary Medicine / Q000266:history*