Studies on bioaccumulation of heavy metals in freshwater fishes and mollusks of Turag river and Dhaleshwari river / [MS Thesis] University of Dhaka Mollusks 594 UNS Thesis (MS) -- Department of Zoology, University of Dhaka, 2004-05. Includes bibliographical references Dhaka : University of Dhaka, 2011. 2011. 2011 Text [7] 69 p. : eng