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Item Analytical and phytochemical studies on Gloriosa superba(1987) Kumudini, M.A.N.; Arambewela, L.S.R.Item Gastroprotective activity of hot ethanolic extract of Alpinia Calcarata rhizome in rats(University of Colombo. Colombo, 2005) Arambewela, L.S.R.; Arawwawala, L.D.A.M.; Ratnasooriya, W.D.Item Studies on Gloriosa superba grown in Sri Lanka(National Science Council:Colombo, 1991) Arambewela, L.S.R.; Kumudini, M.A.N.; Ranatunga, J.Item Quality control studies on two medicinal plants and their applications(1986) Ratnayake, C.K.; Arambewela, L.S.R.Item Studies on the alkaloid contents of the bark of Cinchona found in Sri Lanka(National Science Council:Colombo, 1984) Goonatilake, L.A.; Arambewela, L.S.R.; De Costa, R.Item Optimising alkaloid yield in Catharanthus roseus(National Science Council:Colombo, 1993) Arambewela, L.S.R.; Ranatunga, J.; Wijeratne, S.; Fernando, P.; Wickramasinghe, K.