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Item Groundwater regulation through design of agrowell dimensions in the hard-rock aquifer - a case study in the North Western province of Sri Lanka(Postgraduate Institute of Agriculture, University of Peradeniya:Peradeniya, 1997) De Silva, C.S.Item Sustainable groundwater resource management in the Thirappane tank cascade system(National Science Foundation:Colombo, 2002) De Silva, C.S.Item Sustainability of agrowell irrigation on hardrock aquifers of Sri Lanka(Postgraduate Institute of Agriculture, University of Peradeniya:Peradeniya, 1996) De Silva, C.S.; Wetherhead, K.; Rushton, K.R.Item A preliminary study on agro-wells in hard rock aquifer, with special reference to well performance(Postgraduate Institute of Agriculture, University of Peradeniya:Peradeniya, 1993) De Silva, C.S.