00765nam a2200193Ia 4500 CTU_159961 210402s9999 xx 000 0 und d 333.9 S586/N298 Silva, Sena S. de Reservoirs of Sri Lanka and their fisheries Sena S. de Silva Rome FAO 1988 Sir Lanka, a continental tropical island of 65000 km2, is reputed for its ancient irrigation reservoirs, constructed over the last 2000 years. The island, which is devoid of natural lakes has 3 ha of artificially created lentic waters for every km2,...... Fisheries,Thủy sản Hồng, Năm Trung tâm Học liệu Trường Đại học Cần Thơ