Muhammad Ashraf, Ejaz Rasul and Muhammad Saleem
Pakistan Journal of Biological Sciences 3 ( 10 ): 1605 - 1608 , 2000
Aqueela Sharif, Ejaz Rasul, Abid Nisar and M.Sadiq
Pakistan Journal of Biological Sciences 2 ( 3 ): 606 - 608 , 1999