Deka, I. (2011) “Synchronization of oestrus with PGF2α analogue and ear implant and serum oestradiol–17ß and progesterone profile in Asom local cows”, The Indian Journal of Animal Sciences, 80(2). Available at: https://epubs.icar.org.in/index.php/IJAnS/article/view/2772 (Accessed: 23 October 2025).