Population Structure and a Pattern of the Gastropod Potamides cingulatus (Gmelin) in a Mangrove Habitat of Karachi, Pakistan

M. Atiqullah Khan, S.M. Saifullah, S.S. Shaukat, Naemullah Qureshi and F. Chaghtai

Pakistan Journal of Biological Sciences 2 ( 1 ): 178 - 181 , 1999