Sugiarto, Wahyu, T. Listiyani R. A., Hill G. Hartono, and Ev. Budiadi. “The THE EFFECT OF GEOLOGICAL STRUCTURES ON THE COAL QUALITY OF THE SEMBAKUNG FORMATION IN BERAU REGENCY, EAST KALIMANTAN”. KURVATEK 9, no. 1 (April 16, 2024): 17-24. Accessed June 19, 2024. //journal.itny.ac.id/index.php/krvtk/article/view/4894.