na INLIS000000000003077 Ind 0010-1118003077 Simple methods for aquaculture : topography for freshwater fish culture topographical surveys COCHE, A.G. Text by A.G. Coche; Graphic design by T. Laughlin Rome FAO 1989 266 p. : ill. ; 21 cm.-- 266 p. : ill. ; 21 cm.-- 639.31 FISH CULTURE TOPOGRAPHY 1490/FAO/91