Muhammad Saeed, Ata Ullah, Riaz Ahmad and Abdul Jabbar
Pakistan Journal of Biological Sciences 2 ( 3 ): 980 - 983 , 1999
Ghulam Qadir, Muhammad Saeed and Mumtaz Akhtar Cheema
Pakistan Journal of Biological Sciences 2 ( 1 ): 236 - 239 , 1999