2014-06-102014-06-101991https://dl-cri.nsf.gov.lk//handle/1/4026enSoil analysisNutrientsIon exchange resinsAnalytical techniquesTemperate soilTropical soilIon exchange resin method for assessment of nutrient availabilityin temperature and tropical soilsThesisPhDSOM-2 1991University of Aberdeen, UK