Kovalchuk , I.V., M.V. Slusar, and I.I. Kovalchuk. “Analysis of the State of Dairy Cattle Breeding in Ukraine, As a Promising Sector of the Economy”. Bulletin of Sumy National Agrarian University. The series: Livestock, no. 4(39) (December 23, 2019): 63-67. Accessed April 27, 2024. https://snaubulletin.com.ua/index.php/ls/article/view/145.