JOURNAL SYSTEM. 0 - Prelim. Africa Development, [S. l.], v. 23, n. 3-4, 1998. DOI: 10.57054/ad.v23i3-4.2397. Disponível em: https://journals.codesria.org/index.php/ad/article/view/2397. Acesso em: 27 jul. 2025.