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American Enterprise Institute for Public Policy Research; … - Washington, DC : AEI - 1.1977 - 12.1988,3; 13.1990 -

Persistent link: https://www.econbiz.de/10000361339

United States Geological Survey; USA / Bureau of Mines - Reston, Va. : [Verlag nicht ermittelbar] - Nachgewiesen 1996 -

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USA / Bureau of Mines; United States Geological Survey - Washington, DC : US Gov.Print.Off. - 1932/33(1933); 1934 - 1936; 1937 -

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Cato Institute; American Enterprise Institute for … - Washington, DC : Cato Inst. - 1.1977 -

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USA / Bureau of Mines; United States Geological Survey - Washington, DC : US Gov.Print.Off. - 1932 -

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United States Geological Survey; USA / Bureau of Mines - Reston, Va. : Dept. - 1978 -

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