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://journals-test.ulb.uni-bonn.de/index.php/erdkunde/article/view/1262. Acesso em: 11 dec. 2024.