LOUIS, H. Neue Schulatlanten. ERDKUNDE, [S. l.], v. 3, n. 4, p. 249–256, 1949. DOI: 10.3112/erdkunde.1949.04.08. Disponível em: https://journals-test.ulb.uni-bonn.de/index.php/erdkunde/article/view/941. Acesso em: 4 dec. 2024.