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- catalog contributor b6269630.
- catalog created "[1972]".
- catalog date "1972".
- catalog date "[1972]".
- catalog dateCopyrighted "[1972]".
- catalog extent "32 p.".
- catalog isPartOf "Information circular (United States. Bureau of Mines) ; 8565.".
- catalog isPartOf "United States. Bureau of Mines. Information circular 8565".
- catalog issued "1972".
- catalog issued "[1972]".
- catalog language "eng".
- catalog publisher "[Washington] U. S. Dept. of the Interior, Bureau of Mines".
- catalog subject "Air Pollution.".
- catalog subject "Automobiles Motors Exhaust gas.".
- catalog subject "Motor vehicles Pollution control devices.".
- catalog subject "Platinum.".
- catalog title "Demand for platinum to reduce pollution from automobile exhausts.".
- catalog type "text".