JOURNAL SYSTEM. 0 - Prelim. Afrique et développement, [S. l.], v. 17, n. 1, 1992. DOI: 10.57054/ad.v17i1.2696. Disponível em: https://journals.codesria.org/index.php/ad/article/view/2696. Acesso em: 17 mai. 2024.