JOURNAL SYSTEM. AD, Volume 18, n° 4, 1993 - Full Issue. Africa Development, [S. l.], v. 18, n. 4, 1993. DOI: 10.57054/ad.v18i4.1962. Disponível em: https://journals.codesria.org/index.php/ad/article/view/1962. Acesso em: 2 aug. 2025.