TSitologiya i Genetika 1990, vol. 24, no. 3, 58-63 Cytology and Genetics , vol. , no. , , doi: https://www.doi.org/ Variability of Milk Production Level of Simmental and Steppe Breed Cows in the Evaluation of Different Ranks of Species Gene Pool Chernyakova N. E., Shtompel R. I., Taranenko G. S. Keywords: TSitologiya i Genetika 1990, vol. 24, no. 3, 58-63 Cytology and Genetics , vol. , no. , , doi: Full text and supplemented materials References