[Economic and organizational prerequisites for the successful development of the breeding and specific use of young brood cows on state farms in the People's Republic of Bulgaria].
D000822:Animal Husbandry / Q000191:economics*; D000818:Animals; D001947:Breeding; D002031:Bulgaria; D002417:Cattle / Q000502:physiology*; D005260:Female
Ikononicheski i organizatsionni predpostavki za uspeshno razvitie na otglezhdaneto i tselenasochenoto izpolzuvane na mladite zhenski razplodni goveda v obshtestvenite stopanstva na NRB.