A. Sana, M. Rashid, M. Asghar and M. Yaqub
Pakistan Journal of Biological Sciences 1 ( 2 ): 78 - 80 , 1998
M. Asgher, Y. Saleem, M. Yaqub and M.A. Sheikh
Pakistan Journal of Biological Sciences 1 ( 4 ): 396 - 398 , 1998