EL-BUSHRA, E.-S. Develpoment planning in the Sudan. ERDKUNDE, [S. l.], v. 39, n. 1, p. 55–59, 1985. DOI: 10.3112/erdkunde.1985.01.07. Disponível em: https://www.erdkunde.uni-bonn.de/article/view/2062. Acesso em: 30 apr. 2025.