Mageswaran, R.Mahalingam, S.2010-07-062010-07-061983Journal of the National Science Council of Sri Lanka, 11(2):p.269-275https://dl.nsf.gov.lk/handle/1/6457Drinking waterInternational standardsTechnologyNitrate-nitrogen content of well water and soil from selected areas in the Jaffna peninsulaArticle