MONTEH, R. N. FRONTIERS TRANSGRESSIONS AND THE EVOLUTION OF ILLEGAL PRACTICES IN THE CENTRAL AFRICAN STATES BEFORE THE ADVENT OF BOKO HARAM INSURGENT: A HISTORICAL STUDY DURING RECENT TIMES. PEOPLE: International Journal of Social Sciences, [S. l.], v. 4, n. 3, p. 1573–1589, 2019. DOI: 10.20319/pijss.2019.43.15731589. Disponível em: https://grdspublishing.org/index.php/people/article/view/760. Acesso em: 6 dec. 2022.