“TEMPORAL VARIATIONS IN PERCHED WATER AND GROUNDWATER QUALITIES AT AN OPEN SOLID WASTE DUMPSITE IN SRI LANKA”, INTERNATIONAL JOURNAL OF GEOMATE, vol. 13, no. 38, pp. 1–8, Feb. 2017, Accessed: Jul. 05, 2026. [Online]. Available: https://geomatejournal.com/geomate/article/view/1421