BISWAS, T K, S BANDYOPADHYAY, RAMESHA K P, M K GHOSH, JAYAKUMAR S, and G KRISHNAN. 2011. “Non-Genetic Factors Affecting Birth Weight in Yak”. The Indian Journal of Animal Sciences 79 (8). https://epubs.icar.org.in/index.php/IJAnS/article/view/3102.