BONIA, k K. and GOSWAMI, J. (2011) “Serum 17β- oestradiol, progesterone and cortisol level during biological stress period of normal and sub-oestrous cycles of crossbred cattle of Asom”, The Indian Journal of Animal Sciences, 81(7). Available at: https://epubs.icar.org.in/index.php/IJAnS/article/view/7716 (Accessed: 21 May 2025).