JOURNAL SYSTEM. 9 - Focus on Research and Training Institutes . Africa Development, [S. l.], v. 5, n. 4, 1980. DOI: 10.57054/ad.v5i4.3360. Disponível em: https://www.journals.codesria.org/index.php/ad/article/view/3360. Acesso em: 6 aug. 2025.