V.G. Semenov, A.D. Baimukanov, A.S. Alentayev, R.M. Mudarisov, & A.K. Karynbayev. (2021). DAIRY PRODUCTIVITY OF HOLSTEIN COWS OF DIFFERENT BREEDINGS UNDER THE CONDITIONS OF COMMERCIAL DAIRY FARMS. «Вестник НАН РК», (3), 110–115. извлечено от http://89.250.84.46/bulletin-science/article/view/2093 (Original work published 12 июнь 2021 г.)