Rukhsana Bajwa, Naureen Akhtar and Arshad Javaid
Pakistan Journal of Biological Sciences 4 ( 5 ): 503 - 507 , 2001
Naureen Akhtar, Arshad Javaid and Rukhsana Bajwa
Pakistan Journal of Biological Sciences 4 ( 11 ): 1364 - 1367 , 2001