M. Zubair, M. Anwar, A. M. Haqqani and M. A. Zahid
Asian Journal of Plant Sciences 1 ( 2 ): 128 - 129 , 2002
M. Shafiq Zahid, A. M. Haqqani, M. Usman Mufti and Safdar Shafeeq
Asian Journal of Plant Sciences 1 ( 6 ): 690 - 693 , 2002