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Item Repellency and toxicity of four essential oils to Sitophilus oryzae L. (Coleoptera:Curculionidae)(National Science Foundation:Colombo, 2004) Paranagama, P.A.; Abeysekera, K.H.T.; Nugaliyadde, L.; Abeywickrama, K.P.Item A comparison of essential oil constituents of bark, leaf root and fruit of cinnamon (cinnamomum zeylanicum Blum), grown in Sri Lanka(National Science Foundation:Colombo, 2001) Paranagama, P.A.; Wimalasena, S.; Jayatilake, G.S.; Jayawardena, A.L.; Senanayake, U.M.; Mubarak, A.M.