Mohammed, K., S. Ziada, M., Darwish, G. (1998). 'PRACTICAL TRIALS FOR FREEZING SEMEN OF BUFFALO AND FRIESIAN BULLS: Effect of various regimens of freezing, different milk extenders and types of straws packages on post-thawing semen characters', Assiut Veterinary Medical Journal, 39.1(77), pp. 70-93. doi: 10.21608/avmj.1998.183175