Science Bulletins - (Vidurava)

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Vidyawen uparima palagenima
(National Science Council:Colombo, 1976) Senanayake, U.M.
Prof. Nandadasa kodagoda - his contribution in popularisation of science
(National Science Fundation:Colombo, 1997) Senanayake, U.M.
Alternative methods of pest control
(NARESA:Colombo, 1988) Senanayake, U.M.
Aroma therapy
(NARESA:Colombo, 1993) Senanayake, U.M.
Prof. Nandadasa kodagoda - his contribution in popularisation of science
(National Science Foundation of Sri Lanka, 1997) Senanayake, U.M.