JOURNAL SYSTEM. 0 - Prelim. Africa Development, [S. l.], v. 23, n. 1, 1998. DOI: 10.57054/ad.v23i1.2428. Disponível em: https://www.journals.codesria.org/index.php/ad/article/view/2428. Acesso em: 5 aug. 2025.