Groundwater vulnerability in and around Narayanganj town / Ashraf Ali Seddique [MPhil Thesis] Seddique, Ashraf Ali Water pollution 628.1686 SEG Thesis (M. Phil.) Department of Geology, University of Dhaka, 1997-98. Includes Bibliographical references Dhaka : University of Dhaka, 2003. 2003. 2003 Text ix, 108p. 6 leaves of plate : eng