Identification of Characteristics and Distribution of Subsurface Coal Using the 2D Geoelectric Method in Tanjung Palas Timur District, North Kalimantan. Al-Fiziya: Journal of Materials Science, Geophysics, Instrumentation and Theoretical Physics, [S. l.], v. 5, n. 1, p. 33–45, 2022. DOI: 10.15408/fiziya.v5i2.23106. Disponível em: https://journal.uinjkt.ac.id/al-fiziya/article/view/23106. Acesso em: 30 jan. 2026.