Studies on the abundance of protozoan microfauna and their limnological relationships in some selected pristine ponds of Mathbaria, Barisal, Bangladesh / [MS Thesis] Aquatic ecology 577.6 STU Thesis (MS)--Department of Zoology, University of Dhaka, Session : 2001-2002. Includes bibliographical references. Dhaka : University of Dhaka, 2006. 2006. 2006 Text vii, 93 p. : eng