Induction of tryptophan auxotrophs in neurospor crassa and studies of their complementation / Farida Binte Lutfar [PhD Thesis] Lutfar, Farida Binte Genetics 576.5 LUI Thesis (PhD )--Department of Botany, University of Dhaka, 2007. Includes bibliographical references. Dhaka : University of Dhaka, 2007. 2007. 2007 Text [21], 164 p. : eng