Zaheer Ahmed, S. Inayat, K. Naeem and S.A. Malik
International Journal of Poultry Science 2 ( 6 ): 449 - 453 , 2003
Yasmin , T., S. Khalid, M..H. Soomro, S.A. Malik, H. Shah and I. Ahmad
Journal of Biological Sciences 1 ( 4 ): 212 - 213 , 2001