K.A. Zaied, A.M. El-Adl, S.M. Abd El-Wahab, M.A. Nasef and E.S. Ibrahim
Pakistan Journal of Biological Sciences 4 ( 3 ): 280 - 288 , 2001
El- Adl, Zaied K.A., Abd El-Wahab, Nassef M.A and E.S. Ibrahim
Pakistan Journal of Biological Sciences 4 ( 2 ): 215 - 227 , 2001