Browsing by Author "Perera, H.Y.R."
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Item Energy efficient lighting for household:a survey(Sri Lanka Energy Managers Association:Colombo, 1995) Lucas, J. R.; Perera, H.Y.R.; Wijayatunga, P. D. C.; Wijeratna, D. C.; Siyambalapitiya, T.; Jayasekara, T.A.K