MONOWAR, S A L, and C SINGH. “Blood Urea Concentration in Crossbred (Friesian X Hariana) Heifers and Lactating Cows”. The Indian Journal of Animal Sciences 74, no. 4 (March 2, 2014). Accessed October 23, 2025. https://epubs.icar.org.in/index.php/IJAnS/article/view/38469.