Proceedings of a workshop on Ostertagia and other nematode parasites of importance in ruminant livestock. College Park, Maryland, USA. 5-8 March 1996.
D000818:Animals; D009349:Nematode Infections / Q000662:veterinary*; D010028:Ostertagia; D010029:Ostertagiasis / Q000662:veterinary*; D012418:Ruminants