Noor-ul Islam Khan, Muhammad Akbar, Khalid Mehmood Sabir and Shahid Iqbal
Journal of Biological Sciences 1 ( 3 ): 99 - 100 , 2001
Muhammad Akbar, Noor-ul Islam Khan and Khalid Mahmood Sabir
Journal of Biological Sciences 1 ( 6 ): 446 - 447 , 2001