Nikolov, I [Regulation of the reproductive functions of cows by hormonal preparations]. [electronic resource] - Veterinarno-meditsinski nauki 1986 - 86-91 p. digital Publication Type: English Abstract; Journal Article ISSN: 0324-1068 Subjects--Topical Terms: AnimalsCattle--physiologyChorionic Gonadotropin--pharmacologyEstrus--drug effectsFemaleFertility--drug effectsGonadotropin-Releasing Hormone--analogs & derivativesHormones--pharmacologyInsemination, Artificial--veterinaryProgesterone--pharmacologyReproduction--drug effects