title: [Influence of hormone preparations on the fertility of cows and heifers].
mesh_terms: D000818:Animals; D002417:Cattle; D004341:Drug Evaluation; D004958:Estradiol / Q000494:pharmacology*; D005260:Female; D005298:Fertility / Q000187:drug effects*; D008535:Megestrol / Q000494:pharmacology*
chemical_list: D004958:Estradiol; D008535:Megestrol
vernacular_title: Vliianie gormonal'nykh preparatov na  oplodotvoriaemost' korov i telok