JOURNAL SYSTEM. AD, Volume 17, n° 1, 1992 - Full Issue. Africa Development, [S. l.], v. 17, n. 1, 1992. DOI: 10.57054/ad.v17i1.1971. Disponível em: https://journals.codesria.org/index.php/ad/article/view/1971. Acesso em: 13 feb. 2025.