Riazud Din Ahmad, Abdul Jabbar Malik, Mohammad Ali Chang, Gul Hassan and Mohammad Subhan
Asian Journal of Plant Sciences 1 ( 4 ): 432 - 435 , 2002
M. Umar Khan, M. Qasim, M. Subhan, Riazud Din Ahmad and Liaquat Ali
Journal of Applied Sciences 3 ( 7 ): 530 - 536 , 2003