Fedorovych , Ye., V. Fedorovych, N. Mazur, P. Bodnar, and F. Fil. “Reproductive Ability of Cows and Their Descendants of Different Generations”. Bulletin of Sumy National Agrarian University. The series: Livestock, no. 4(39) (December 23, 2019): 20-27. Accessed April 18, 2024. https://snaubulletin.com.ua/index.php/ls/article/view/115.