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Item A survey of the expenditure on research and experimental development in Sri Lanka:1966-1975(NSC:Colombo; 76p, 1977) Liyanage, S.Item A report on the inputs into scientific research in Sri Lanka(NARESA:Colombo; 50p, 1985) Liyanage, S.; De Silva, A.; Goonathilaka, S.Item Science and Technology Indicators in Sri Lanka:part I-organizational structures and the status of national efforts in science and technology(NARESA:Colombo; 93p, 2010-07-06) Liyanage, S.; De Silva, M.A.T.Item Directory of scientific and technical personnel in Sri Lanka:Scientists and Engineers(NSC:Colombo; 375p, 1979) Liyanage, S.; De Silva, M.A.T.