CREDNER, W. Reisen und Arbeiten L. Waibels in Brasilien 1947. ERDKUNDE, [S. l.], v. 1, n. 2, p. 209–209, 1947. DOI: 10.3112/erdkunde.1947.02.13. Disponível em: https://journals-test.ulb.uni-bonn.de/index.php/erdkunde/article/view/860. Acesso em: 8 oct. 2024.