Geochemical Analysis of Soil and Kalipait River Water as Indicators of Environmental Degradation at the Central Point of the Ijen Geopark Area. IPSSJ [Internet]. 2026 Jan. 22 [cited 2026 Oct. 22];3(01 Januari):412-7. Available from: https://ipssj.com/index.php/ojs/article/view/1148