TY - BOOK TI - Some histopathological effects of organophosphorus insecticides,diazinon,carbicron and dimecron on the conads of freshwater catfish, heteropneustea fossilis (Bloch) U1 - 553.7 PY - 1980/// CY - Dhaka PB - University of Dhaka KW - Fossilis N1 - Thesis (MS) -- Department of Zoology, University of Dhaka, 1980; Includes bibliographical references ER -