Abbas Mohamed Ahmed, N.T. Mekki, Muna O. Elhaj and Sarah Mohamed Abusalab
Journal of Animal and Veterinary Advances 5 ( 2 ): 92 - 95 , 2006
M.A.A. Sarah, N.T. Mekki, M.O. Elhaj, M.O. Halima, M.M. Omer, M.E. Hamid and M.A. Abbas
Veterinary Research 1 ( 4 ): 84 - 87 , 2007