BUTZER, K. W. Contributions to the Pleistocene geology of the Nile Valley. ERDKUNDE, [S. l.], v. 13, n. 1, p. 46–67, 1959. DOI: 10.3112/erdkunde.1959.01.04. Disponível em: https://www.erdkunde.uni-bonn.de/article/view/1262. Acesso em: 30 apr. 2025.