Razanova, Olena Petrivna, and Serhii Viktorovych Skrypnyk. “THE INFLUENCE OF PROBIOTIC DRUGS ON THE DEVELOPMENT OF BEE FAMILIES IN THE SPRING PERIOD”. Bulletin of Sumy National Agrarian University. The series: Livestock, no. 2 (September 29, 2022): 54-60. Accessed July 22, 2024. https://snaubulletin.com.ua/index.php/ls/article/view/660.