Jayawardena, U. De S.2010-07-062010-07-061991Journal of the National Science Council of Sri Lanka, 19(1):p.9-17https://dl.nsf.gov.lk/handle/1/6559GeomorphologyElectrical conductivityChemical analysisWater wellsWell surveysHydrologyGeologyA preliminary study on the chemical quality of ground water in the Andella oya basin of Sri LankaArticle