YECHO, J. I.; YECHO, E. I.; TYONZUGHUL, T. T. Quarry Economics and Community Development in Mbajôv, Southern Tivland, 1960-2017. Covenant Journal of Entrepreneurship, [S. l.], v. 5, n. 2, 2022. Disponível em: https://journals.covenantuniversity.edu.ng/index.php/cjoe/article/view/2850. Acesso em: 6 may. 2024.