Jehan Zeb, Shahid Ahmad, M. Aslam and Taj Ali Khan
Pakistan Journal of Biological Sciences 2 ( 4 ): 1334 - 1337 , 1999
Jehan Zeb, M.Aslam, Shahid Ahmad and Aamir Kabir
Pakistan Journal of Biological Sciences 2 ( 4 ): 1415 - 1418 , 1999