Kiman, Silas, Blessing B Nakai, Omale S Ogakwu, and Wadinda J Mamza. “A Characterization Study of Raw Maiganga, Gombe Coal”. Advanced Journal of Science and Engineering 3, no. 2 (May 15, 2022): 103–112. Accessed September 16, 2024. https://sciengpub.ir/adv-j-sci-eng/article/view/advjse22032103.