Asia Riaz, Muhammad Aslam and Nazia Suleman
Pakistan Journal of Biological Sciences 3 ( 6 ): 1033 - 1036 , 2000
Muhammad Aslam, Nazia Suleman, Asia Riaz, Abdul Rehman and Qamar Zia
Pakistan Journal of Biological Sciences 3 ( 6 ): 963 - 964 , 2000