Tiwari, R., Mishra, .G.K., Singh, R.B., Saxena , S.K., & Siddiqui , M.U. (2012). Performance Of Pure Danish Holstein Friesian Bulls Under Indian Management And Tropical Climatic Conditions . Indian Journal of Veterinary Sciences and Biotechnology, 8(1), 50–54. Retrieved from https://acspublisher.com/journals/index.php/ijvsbt/article/view/3219