00821nam a2200193Ia 4500 CTU_160413 210402s9999 xx 000 0 und d 526.9 C661 Coche, A. G. Simple methods for aquaculture topography for freshwater fish culture topographical surveys A.G. Coche ; graphic design T. Laughlin Rome FAO 1989 Topographical surveys - plan surveying, topographical surveys - direct levelling, topographical plans and maps, measurement of areas and then topography and freshwater fish culture. Topographical surveying,Fish-culture,Khảo sát địa hình,Nuôi cá nước ngọt Bạch Trúc Trung tâm Học liệu Trường Đại học Cần Thơ