UGNIVENKO, ANATOLII, STEPAN DEMCHUK, DMYTRO NOSEVYCH, and GENNADII BONDARENKO. 2021. “Duration of Calving Stages in Beef Cows under Different Housing Systems”. The Indian Journal of Animal Sciences 90 (11): 1531-34. https://doi.org/10.56093/ijans.v90i11.111566.