S. A. Kakakhel, N. Islam, M. Amjad and M. A. Malik
Pakistan Journal of Biological Sciences 3 ( 4 ): 669 - 671 , 2000
S. A. Kakakhel, M. Amjad, Shafiullah and R. Masih
Pakistan Journal of Biological Sciences 3 ( 3 ): 528 - 530 , 2000