Syahputri, Maharani, and Muhammad Kadri. “IDENTIFICATION OF SUBSURFACE STRUCTURE USING GEOMAGNETIC METHOD AND ROCK MINERAL ANALYSIS WITH XRD TEST IN GEOTHERMAL AREA OF PAYUNG VILLAGE KARO REGENCY”. EINSTEIN (e-Journal), vol. 12, no. 3, Oct. 2024, pp. 32-38, doi:10.24114/ein.v12i3.51272.