JOURNAL SYSTEM. AD, Volume 13, n° 2, 1988 - Full Issue. Africa Development, [S. l.], v. 13, n. 2, 1988. DOI: 10.57054/ad.v13i2.1987. Disponível em: https://journals.codesria.org/index.php/ad/article/view/1987. Acesso em: 23 jan. 2025.