Fedorovych , Vitaliy, Mariya Petko, Ihor Chornyi, and Nataliya Mazur. “Economic Useful Features of Different Genealogical Bee Formations of the Carpathian Breed”. Bulletin of Sumy National Agrarian University. The series: Livestock, no. 4(43) (December 25, 2020): 76-81. Accessed April 19, 2024. https://www.snaubulletin.com.ua/index.php/ls/article/view/260.