GEOTHERMAL AND HOT SPRING WATER ORIGIN DETERMINATION USING OXYGEN AND HYDROGEN STABLE ISOTOPE IN THE TOYOHIRAKAWA CATCHMENT, HOKKAIDO, JAPAN . INTERNATIONAL JOURNAL OF GEOMATE. 2017;13(37):127-132. Accessed May 1, 2026. https://geomatejournal.com/geomate/article/view/1559