Sugiarto, W., R. A., T.L., Hartono, H.G. and Budiadi, E. 2024. The THE EFFECT OF GEOLOGICAL STRUCTURES ON THE COAL QUALITY OF THE SEMBAKUNG FORMATION IN BERAU REGENCY, EAST KALIMANTAN. KURVATEK. 9, 1 (Apr. 2024), 17-24. DOI:https://doi.org/10.33579/krvtk.v9i1.4894.