Khmelnychyi, L. M., Karpenko, B. M., & Suprun, I. O. (2023). THE HOLSTEIN BREED – GENESIS, BIOLOGICAL CHARACTERISTICS AND THE EFFICIENCY OF ITS USE IN THE CREATION AND IMPROVEMENT OF SPECIALIZED DAIRY BREEDS. Bulletin of Sumy National Agrarian University. The Series: Livestock, (4), 59-71. https://doi.org/10.32782/bsnau.lvst.2023.4.7