title: Epizootiologic factors of Fascioloides magna (trematoda) in Oregon and Southern Washington.
mesh_terms: D000818:Animals; D001188:Artiodactyla; D002417:Cattle; D002418:Cattle Diseases / Q000453:epidemiology*; D009922:Oregon; D012908:Snails; D014201:Trematode Infections / Q000453:epidemiology / Q000662:veterinary*; D014861:Washington