Mohammad Subhan, M. Qasim, Riaz-ud-Din Ahmad, M. Umar Khan, M. Amin Khan and M. Amir Amin
Asian Journal of Plant Sciences 2 ( 11 ): 853 - 857 , 2003
Muhammad Subhan, Himayat Ullah Khan and Riaz-ud-Din Ahmad
Journal of Biological Sciences 1 ( 3 ): 120 - 123 , 2001