JOURNAL SYSTEM. Africa Development, Volume 12, n° 3, 1987. Africa Development, [S. l.], v. 12, n. 3, 1987. DOI: 10.57054/ad.v12i3.1992. Disponível em: https://journals.codesria.org/index.php/ad/article/view/1992. Acesso em: 29 jul. 2025.