Preliminary Evaluation of Quality and Rank of Banik Coal, Zakho, Duhok Governorate, Kurdistan Region, Iraq. UKH Journal of Science and Engineering, [S. l.], v. 5, n. 2, p. 36–46, 2021. DOI: 10.25079/ukhjse.v5n2y2021.pp36-46. Disponível em: https://journals.ukh.edu.krd/index.php/ukhjse/article/view/370.. Acesso em: 4 may. 2024.