BECK, H. Carl-Ritter-Forschungen. ERDKUNDE, [S. l.], v. 10, n. 3, p. 227–233, 1956. DOI: 10.3112/erdkunde.1956.03.05. Disponível em: https://journals-test.ulb.uni-bonn.de/index.php/erdkunde/article/view/1176. Acesso em: 4 dec. 2024.