T. B. FRIIS, F. WORLD ECONOMIC SURVEY. Ninth Year. 1939-M. League of Nations. Geneva 1941. 275 S. STATISTICAL YEAR-BOOK OF THE LEAGUE OF NATIONS. 1940-41. Geneva 1941. 271 S. Nationaløkonomisk Tidsskrift, [S. l.], v. 80, 1942. Disponível em: https://tidsskrift.dk/nationaloekonomisktidsskrift/article/view/60154. Acesso em: 4 maj. 2024.