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\bibitem{Elumalai*_etal2017} Elumalai*, V., Brindha, K., Sithole, B., \& Lakshmanan, E. (2017). Spatial interpolation methods and geostatistics for mapping groundwater contamination in a coastal area. \textit{Environ. Sci. Pollut. Res.}, \textit{24(3)}, 11601--11617.

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