PT Journal AU Elumalai*, V Brindha, K Sithole, B Lakshmanan, E TI Spatial interpolation methods and geostatistics for mapping groundwater contamination in a coastal area SO Environ. Sci. Pollut. Res. PY 2017 BP 11601 EP 11617 VL 24(3) DI 10.1007/s11356-017-8681-6 ER