The Biological basis of freshwater fish production : a symposium sponsored by Sectional Committee on Productivity of Freshwater Communities of the International Biological Programme, the University, Reading, England, 1-6 September, 1966 / edited by Shelby D. Gerking. Gerking, Shelby Delos, 1918- ed. International Biological Programme. Sectional Committee on Productivity of Freshwater Communities. University of Reading. Fishes Congresses. Fish populations Congresses. Fish culture Congresses. Fisheries congresses. Fishes congresses. QL615 .B5 1966b 597.093 GEB Includes bibliographical references and index. Oxford ; Edinburgh : Blackwell Scientific , c1967 . c1967 . 1967 Text xiv, 495 p. : eng