SWIFT, Jeremy. 2 - Desertification and Man in the Sahel. Africa Development, [S. l.], v. 1, n. 2, 1976. DOI: 10.57054/ad.v1i2.3385. Disponível em: https://journals.codesria.org/index.php/ad/article/view/3385. Acesso em: 12 mar. 2025.