JOURNAL SYSTEM. AD, Volume 12, n° 1, 1987 - Full Issue. Africa Development, [S. l.], v. 12, n. 1, 1987. DOI: 10.57054/ad.v12i1.1994. Disponível em: https://www.journals.codesria.org/index.php/ad/article/view/1994. Acesso em: 5 aug. 2025.