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Die Wirtschafts- und Verkehrserschliessung der Amazonasregion
Uelze, Reginald, (1980)
Estrutura geo-social e econômica da Amazônia
Benchimol, Samuel, (1966)
Alternative migration targets and Brazilian Amazonia's closing frontiers
Mougeot, Luc J. A., (1984)
Aspectos da sêca de 1951, no Ceará
Sternberg, Hilgard O'Reilly, (1951)
Brazil: Complex giant
Sternberg, Hilgard O'Reilly, (1965)
The distribution of water power resources in Brazil with reference to the participation ratio concept
Sternberg, Hilgard O'Reilly, (1948)