Munir Ahmad, Nighat Perveen, Muhammad Sultan, Muhammad Aslam and Muhammad Aulakh
Journal of Biological Sciences 1 ( 4 ): 218 - 219 , 2001
M. Khalid Al Hariri, Anjum Suhail, Nighat Perveen and Nazar Ali Shah
Journal of Biological Sciences 1 ( 9 ): 859 - 865 , 2001