Noor Khan, Javed Iqbal Masroor and Shakeela Khalid
Journal of Biological Sciences 1 ( 4 ): 275 - 277 , 2001
Noor Khan, Shahid Qayyum, Shakeela Khalid and Uzma Aleem
Journal of Biological Sciences 1 ( 4 ): 278 - 279 , 2001