Letchumanan S, Badarulzaman NA, Seli H, Job Ajala A. Characterisation of Minerals and Other Properties of Mukah Coal. jamea [Internet]. 2023 Jun. 28 [cited 2024 Jul. 23];4(1):1-11. Available from: https://penerbit.uthm.edu.my/ojs/index.php/jamea/article/view/9038