M. Yaseen, T. Hussain, A. Hakeem and Nasir Mahmood
Pakistan Journal of Biological Sciences 2 ( 4 ): 1533 - 1535 , 1999
M. Yaseen, T.Hussain, A. Hakeem and S.Ahmad
Pakistan Journal of Biological Sciences 2 ( 3 ): 614 - 616 , 1999