A study of the different isolates and saltants of heleminthosporium with special reference to comparative resistance and susceptibility of hybrids and local parents of rice varietes to one of the opiginal isolates and its saltant / [MS Thesis] Rice 584.9 STU Thesis (MS)--Department of Botany, University of Dhaka, : 1957. Includes bibliographical references. Dhaka : University of Dhaka, 1957. 1957. 1957 Text vi, 76 p. : eng