JOURNAL SYSTEM. 0 - Prelim. Africa Development, [S. l.], v. 20, n. 2, 1995. DOI: 10.57054/ad.v20i2.2547. Disponível em: https://www.journals.codesria.org/index.php/ad/article/view/2547. Acesso em: 5 aug. 2025.