Detection of parasitic protozoans to observe wastewater treatment efficacy at Pagla sewage treatment plant and molecular identification of Giardia lamblia / [MS Thesis] Sewage disposal 628.3 DET Thesis (M.Sc.) -- Department of Zoology, University of Dhaka,2008, Includes bibliographical references Dhaka : University of Dhaka, 2008. 2008. 2008 Text x, 89,[11] p. : eng