Selected epizootiologic aspects of bovine leukemia in Minnesota (1961-1965).
D000367:Age Factors; D000818:Animals; D002417:Cattle; D002418:Cattle Diseases / Q000175:diagnosis / Q000453:epidemiology*; D007938:Leukemia / Q000662:veterinary*; D008228:Lymphoma, Non-Hodgkin / Q000175:diagnosis / Q000453:epidemiology / Q000662:veterinary*; D008910:Minnesota; D012621:Seasons; D013997:Time Factors