Abdul Ghani, Abid Nisar Ahmad, Anwar-ul-Hassan, M. Iqbal, G. Yasin and Naeem Iqbal
Pakistan Journal of Biological Sciences 3 ( 12 ): 2051 - 2052 , 2000
M. Azhar, M. Iqbal, M. A. Khan and M. Ashraf
Pakistan Journal of Biological Sciences 4 ( 9 ): 1111 - 1113 , 2001