Juliani R, Sembiring H. DETERMINATION SUBSURFACE ROCKS USING RESISTIVITY GEOELECTRICITY IN PAMAH PAKU KUTAMBARU LANGKAT REGENCY. einstein e-j. [Internet]. 2015 Jul. 1 [cited 2025 Oct. 12];3(2). Available from: https://jurnal.unimed.ac.id/2012/index.php/einsten/article/view/5453