JOURNAL SYSTEM. AD, Volume 12, n° 2, 1987 - Full Issue. Africa Development, [S. l.], v. 12, n. 2, 1987. DOI: 10.57054/ad.v12i2.1993. Disponível em: https://www.journals.codesria.org/index.php/ad/article/view/1993. Acesso em: 5 aug. 2025.