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\bibitem{Kim_etal2003} Kim, Y., Lee, K. - S., Koh, D. - C., Lee, D. - H., Lee, S. - G., Park, W. - B., et al. (2003). Hydrogeochemical and isotopic evidence of groundwater salinization in a coastal aquifer: a case study in Jeju volcanic island, Korea. \textit{Journal of Hydrology}, \textit{270}(3), 282--294.

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