KOVALCHUK, I. I.; KOVALCHUK, I. V.; MURONYK, L. V.; SAUK, R. V. UDDER HEALTH CONTROL DURING THE DRY PERIOD IN COWS. Bulletin of Sumy National Agrarian University. The series: Livestock, n. 4 (47), p. 87-91, 6 Jan. 2022.