JOURNAL SYSTEM. AD, Volume 17, n° 4, 1992 - Full Issue. Africa Development, [S. l.], v. 17, n. 4, 1992. DOI: 10.57054/ad.v17i4.1967. Disponível em: https://journals.codesria.org/index.php/ad/article/view/1967. Acesso em: 3 jul. 2024.