F. B. Fatoye, . Y. B. . Gideon, and . J. I. Omada, “PETROGRAPHIC EVALUATION OF OKOBO COAL, NORTHERN ANAMBRA BASIN, NIGERIA”, FJS, vol. 8, no. 1, pp. 167–173, Mar. 2024, doi: 10.33003/fjs-2024-0801-2260.