na INLIS000000000003104 20210519133536 210519||||||||| | ||| |||| || | 010-0521003104 en 639.21/ECO 639.21/ECO Edited: Shelby D. Gerking Ecology of freshwater fish production London Blackwell Scientific Publiations 1978 vii, 520 p.: ill.; 24 cm. + index PRODUCTION -- ECOLOGY -- FISH -- FRESHWATER