LAUTENSACH, H. Der XVI. Internationale Geographenkongress 1949. ERDKUNDE, [S. l.], v. 3, n. 2/3, p. 168–170, 1949. DOI: 10.3112/erdkunde.1949.02.10. Disponível em: https://www.erdkunde.uni-bonn.de/article/view/927. Acesso em: 18 may. 2025.