Epidemiologic studies of enzootic bovine leukosis associated with the public control program in Denmark, 1959-1971.
D000818:Animals; D002417:Cattle; D002418:Cattle Diseases / Q000453:epidemiology*; D003718:Denmark; D004199:Disease Vectors; D004812:Epidemiologic Methods; D007938:Leukemia / Q000453:epidemiology / Q000662:veterinary*; D011634:Public Health; D014730:Veterinary Medicine