BHUYAN, M, B C DEKA, B C SARMAH, P CHAKRAVARTY, and B K D BORAH. 2012. “Effect of Three Concentrations of Progesterone in the Vaginal Sponge for Oestrus Synchronization in Yak”. The Indian Journal of Animal Sciences 82 (5). https://doi.org/10.56093/ijans.v82i5.17688.