Ashfaq, M., Kousar, R., Makhdum, M. S. A., & Nasir, J. (2020) 'EMPIRICAL ANALYSIS OF LIVESTOCK PRODUCTIVITY THROUGH IMPROVED BREEDING IN PUNJAB, PAKISTAN', Journal of Animal and Plant Sciences, 30(6), pp. 1642-1652. doi: 10.36899/JAPS.2020.6.0185.