PETROGRAPHIC EVALUATION OF OKOBO COAL, NORTHERN ANAMBRA BASIN, NIGERIA. FUDMA JOURNAL OF SCIENCES, [S. l.], v. 8, n. 1, p. 167–173, 2024. DOI: 10.33003/fjs-2024-0801-2260. Disponível em: https://fjs.fudutsinma.edu.ng/index.php/fjs/article/view/2260. Acesso em: 1 sep. 2025.