A.J. Khan, F. Azam, A. Ali, M. Tariq and M. Amin
Asian Journal of Plant Sciences 4 ( 5 ): 540 - 543 , 2005
Rahmat Ullah Khan, Abdul Ahad, Abdur Rashid and M. Amin
Journal of Biological Sciences 1 ( 3 ): 90 - 91 , 2001