BECK, H. Das Ziel der grossen Reise Alexander von Humboldts. ERDKUNDE, [S. l.], v. 12, n. 1, p. 42–50, 1958. DOI: 10.3112/erdkunde.1958.01.03. Disponível em: https://journals-test.ulb.uni-bonn.de/index.php/erdkunde/article/view/1223. Acesso em: 12 dec. 2024.