Chromatographic study of filtrates of some tryptophan mutants and wild type strain of neurospora crassa / [MS Thesis] S. M. Zahirul Hoq. Hoq, S. M. Zahirul Fungi 579.5 CHR Thesis (MS )-- Department of Botany, University of Dhaka, 1962. Includes bibliographical references. Dhaka : University Of Dhaka, 1962. 1962. 1962 Text 43 p. : eng