Induction of Mutation in Neurospora Crassa with Aqueous, Petroleum Ether and Chloroform wxtracts of Neem (Azadirachta indica A. juss) leaves and Characterization of some selected mutants / [MS Thesis] DNA (Deoxyribonucleic acid) 572.86 IND Thesis (MS) -- Department of Zoology, University of Dhaka, 1995-1996. Includes bibliographical references Dhaka : University of Dhaka, 1999. 1999. 1999 Text ix, 111 p., some leaves of plates : eng