Survival Potential of V.cholerae 01 and V.cholerae 0139 Bengal in association with Copepods : a Microcosm experiment using Bacteriological methods and techniques of Molecular Biology and Genetics / [MS Thesis] Molecular biology 572.8 SUR Thesis (MS) -- Department of Zoology, University of Dhaka, 1995-1996. Includes bibliographical references Dhaka : University of Dhaka, 1999. 1999. 1999 Text ix, 132 p. : eng