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Item Fungicidal activity of synthetically modified cashew nut shell liquid(National Science Council:Colombo, 1993) Weerasena, O.V.D.S.J.; Amarasekara, A.S.; Wijesundara, R.L.C.Item Absorption of the pesticide propanil on agricultural waste products(Natural Resources Energy Science Authority:Colombo, 1994) De Zoysa, W.U.P.; Amarasekara, A.S.