2.NSF Publications
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Item Effect of land use in the upper Mahaweli catchment area on erosion, landslides and siltation in hydropower reservoirs of Sri Lanka(NSF. Colombo, 2010) Hewawasam, T.Item A man's role in the degradation of soil and water resources in Sri Lanka:a historical perspective(National Science Council:Colombo, 1990) Wickramagamage, P.Item Freshwater as a natural resource in sri Lanka(NARESA:Colombo; 58p, 1986) Costa, H.H.