Ogara, Evan Rosyadi, Tri Wahyuni, and Al Hussein Flowers Rizqi. “THE EFFECT OF INTRUSION ON THE PHYSICAL AND CHEMICAL PROPERTIES OF COAL”. JGE (Jurnal Geofisika Eksplorasi) 11, no. 3 (December 19, 2025): 204–216. Accessed December 25, 2025. http://jge.eng.unila.ac.id/index.php/geoph/article/view/495.