Isolotion & characterization of mutants induced wity iv Neurospora Crassa and fusion of their protoplasts isoloted with gastro-intestinal extracts of garden snails, Helix sp.(L) [MS Thesis] Fungi 579.5 ISO Thesis (MS )--Department of Zoology, University of Dhaka, Session : 1997-1998 Includes bibliographical references. Dhaka: University of Dhaka, 2000. 2000. 2000 Text x, 77 p. : eng