[Control of bovine leucosis in the DDR].
D000818:Animals; D002417:Cattle; D002418:Cattle Diseases / Q000517:prevention & control*; D005859:Germany, East; D006285:Health Planning; D007945:Leukemia, Lymphoid / Q000517:prevention & control / Q000662:veterinary*; D014730:Veterinary Medicine
Massnahmen zur Bekämpfung der Rinderleukose in der DD.