NEAUPANE, T.R., PANDIT, R.K., JOGI, S., SHRIVASTAVA, O.P., & AGARWAL, R.G. (2003). Vaginal biopsy, pregnancy detection and induction of farrowing in crossbred sows. The Indian Journal of Animal Reproduction, 24(1), 73–74. Retrieved from https://acspublisher.com/journals/index.php/ijar/article/view/5914