Fedorovych , Y., V. Fedorovych, N. Mazur, P. Bodnar, and S. Fil. 2019. “The Influence of Environmental Factors on the Dairy Productivity of Cows”. Bulletin of Sumy National Agrarian University. The Series: Livestock, no. 3 (38) (September), 44-53. https://doi.org/10.32845/bsnau.lvst.2019.3.7.