KHAN, M. ASLAM; Q. NADEEM; KHAN, S. M.; M. A. NASIR(Pakistan Journal of Botany, Botanical Garden, University of Karachi, Karachi, Pakistan, 2003-02-05)
MUHAMMAD AFZAL AKHTAR; MUHAMMAD ZAKRIA; ABBASI, FIDA MUHAMMAD; M ASIF MASOOD(Pakistan Journal of Botany, Botanical Garden, University of Karachi, Karachi, Pakistan, 2003-02-08)