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Item Release of heavy metals from non calcic brown soil amended with different organic manures(National Agricultural Society of Sri Lanka:Peradeniya, 2004) Nandasena, K.A.; Nilantha, N.P.U.Item Soil organic carbon and nitrogen pools as influenced by polyphenols in different particle size fractions under tropical conditions(National Science Foundation:Colombo, 2009-3) Seneviratne, G.; Henakaarchchi, M.P.N.K.; Weerasekara, M.L.M.A.W.; Nandasena, K.A.Item Zinc adsorption characteristics of some Sri Lankan soils(Soil Science Society of Sri Lanka:Colombo, 2001) Nandasena, K.A.; Rathnayake, M.R.N.D.