Amir Zaman Khan, M. Akhtar, R. Ahmad, N. Ahmad and P. Shah
Journal of Biological Sciences 1 ( 3 ): 126 - 128 , 2001
Amir Zaman Kha, M. Akhtar, M. Riaz, N. Ahmad and P. Shah
Pakistan Journal of Biological Sciences 3 ( 11 ): 1892 - 1896 , 2000