M. H.Tabidi, A.Makkawi, E. Mahasin and A. S. Ali
Journal of Animal and Veterinary Advances 3 ( 1 ): 9 - 12 , 2004
Abdalla, M. O., A. S. Ali and M. E. H. Mohammed
Journal of Animal and Veterinary Advances 3 ( 7 ): 442 - 444 , 2004