KIMAN, S.; NAKAI, B. B.; OGAKWU, O. S.; MAMZA, W. J. A Characterization Study of Raw Maiganga, Gombe Coal. Advanced Journal of Science and Engineering, [S. l.], v. 3, n. 2, p. 103–112, 2022. DOI: 10.22034/advjse22032103. Disponível em: https://sciengpub.ir/adv-j-sci-eng/article/view/advjse22032103. Acesso em: 16 sep. 2024.