Africa and the Challenges of the 21st Century: A Geographical Perspective: Africa and the Challenges of the 21st Century: A Geographical Perspective. jornal of the libyan geographical society, [S. l.], v. 4, n. 4, p. 293–326, 2009. DOI: 10.5281/zenodo.18421547. Disponível em: https://jlgs.ly/ojs/index.php/ojsdata/article/view/58. Acesso em: 13 feb. 2026.