"America, North" . . "Recursos Minerais Ou Geologia Economica." . . "Géologie économique États-Unis." . . "Mines and mineral resources." . . "Economic geology : with special reference to the United States"@en . "Economic geology : with special reference to the United States" . . . . . . "Economic geology [of North America]"@en . . . . . . . . . . . . . . "Economic Geology ... Seventh edition" . . . . . . . . . . . . "Economic geology of the United States, by Heinrich Ries" . . . . . . . . . . "Elementary Economic Geology" . "Economic geology, with special reference to the United States" . "Economic geology, with special reference to the United States"@en . . . "Economic geology of United States"@en . . . . . "Economic Geology : with special reference to the United States" . . . . . . . . . . . . . . . . . "Economic geology with special reference to the United States"@en . . . . . . . . . . "Economic Geology" . . "Economic geology of the United States" . "Economic geology of the United States"@en . . "Economic geology"@en . "Economic geology" . . . . . . . . . . . . . . . "Elementary economic geology" . "Elementary economic geology"@en . . "Economic Geology of the United States. [With illustrations.]" . "Economic Geology of the United States. [With illustrations.]"@en . . . . . . . . . . . . . "Géologie économique." . . "Mines (sites d'extraction)." . . "Geologie." . . . . "Geologia aspekt ekonomiczny." . . "Geologia Geral." . . "Geología económica." . . "United States." . . "Geology, Economic." . . "Mines and mineral resources United States." . .