Madurapperuma, M.A.D.W.S.2021-06-092021-06-091999https://dl-ifs.nsf.gov.lk/handle/1/1987xii,162p.:ill, tableAgriculture:Soil SciencePotential of using AB-DTPA multi-ionic extractant to determine available nutrient status of Highland and Lowland soils of Sri LankaThesisUniversity of PeradeniyaMPhil