A Hydrogeophysical Characterization of Volcanic Aquifers Using Integrated Resistivity and Induced Polarization in Mount Tumpa, Manado. JIS [Internet]. 2026 Apr. 10 [cited 2026 Oct. 28];26(1):62-75. Available from: https://ejournal.unsrat.ac.id/v3/index.php/JIS/article/view/65145