Gerking, Shelby D. Ecology of freshwater fish production / edited by Shelby D. Gerking. - Oxford : Blackwell Scientific Publications , 1978. - xi,513p. : ill ; 23cm. . NULL ISBN: 0632002565 UKP 32.00 Subjects--Index Terms: FISH PRODUCTION Dewey Class. No.: 597.17636 / GER/E