Busch, W [Experimental results of cryopreservation and thawing of bull sperm in pellet form]. [electronic resource] - DTW. Deutsche tierarztliche Wochenschrift - 564-8 p. digital Publication Type: English Abstract; Journal Article ISSN: 0341-6593 Subjects--Topical Terms: AnimalsCattle--physiologyFertilityFreezingMalePenicillins--pharmacologyPreservation, Biological--veterinarySperm MotilitySpermatozoa--drug effects