[Epizootology of bovine leukemia].
D000818:Animals; D002417:Cattle; D002418:Cattle Diseases / Q000453:epidemiology*; D007938:Leukemia / Q000097:blood / Q000453:epidemiology / Q000662:veterinary*; D014586:USSR
Epizootologiia leikoza krupnogo rogatogo skotia.