REPRODUCTIVE INDICATORS OF COWS WITH VARYING DEGREES OF BLOOD ON HOLSTEIN Статья Zabelina M.V., Molynova G.V., Kartashev V.P., Vilkovysky I.F., Aa S. Research Journal of Pharmaceutical, Biological and Chemical Sciences. Research Journal of Pharmaceutical, Biological and Chemical Sciences. Том 9. 2018. С. 1049-1055