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Item Preparation of Heveacrumb from first fraction coagulum(Rubber Research Institute. Agalawatta, 1971) Karunaratne, S.W.Item History and development of the coconut industry of Ceylon(Coconut Research Institute:Lunuwila, 1955) Salgado, M.L.M.Item Irrigation research possibilities in Sri Lanka(1980) Karunanayake, A.M.Item Annual Report of the National Science Foundation 1981(NSF:Colombo, 1981) National Science FoundationItem Do babies need water in Sri Lanka?(1999) Senanayake, M.P.; Weerawarna, H.; Karunaratne, K.W.; De Silva, T.U.N.Item The role of the administration in central-local relations:the legislative and executive control(Natural Resources Energy Science Authority of Sri Lanka:Colombo, 1991) Bandaranayake, S.A.Item Pretreatment to improve the germination of Lunumidella seed(Forest Department:Colombo, 1978) Vivekanandan, K.Item Intensifying land use in irrigation schemes with other field crops(1992) Widanapathirana, A.S.; Rupasena, L.P.; Jayaratna, W.A.Item Tea root show effective depth of soil(TRI. Talawakele, 1962) Hasselo, H.N.Item Health promotion through research and training in exercise and sports medicine(The Ceylon College of Physicians. Colombo, 1998) Goonewardene, I.P.