Wijebandara, D.M.D.I.Somasiri, L.L.W.2014-06-032014-06-031994Annual Sessions of Sri Lanka Association for the Advancement of Science, Sri Lanka. Colombo, 1994. 50:p...https://dl-cri.nsf.gov.lk//handle/1/3588SoilsSoil analysisIon exchange resinsIon exchangeImproved ion exchange resin method for soil phosphorus estimation