Sheep medicine: a century of progress.
D000822:Animal Husbandry / Q000266:history; D000818:Animals; D049671:History, 18th Century; D049673:History, 20th Century; D012756:Sheep; D012757:Sheep Diseases / Q000266:history*; D006113:United Kingdom; D014730:Veterinary Medicine / Q000266:history*