Epidemiologic patterns of nematodiasis in cattle.
D000822:Animal Husbandry; D000818:Animals; D002417:Cattle; D002418:Cattle Diseases / Q000453:epidemiology* / Q000469:parasitology; D002980:Climate; D007814:Larva; D009348:Nematoda / Q000254:growth & development; D009349:Nematode Infections / Q000453:epidemiology / Q000469:parasitology / Q000662:veterinary*; D009656:North America; D010029:Ostertagiasis / Q000453:epidemiology / Q000469:parasitology / Q000662:veterinary; D012621:Seasons