United States Bureau of Mines. text dcu Washington Bureau of Mines, U.S. Dept. of the Interior, U.S. Geological Survey 1933 9999 monographic Annual eng

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v. ill. 24-28 cm. Mines and mineral resources United States Mines and mineral resources Statistics Mineral industries Statistics Mines and mineral resources Europe and Central Eurasia I 19.165: 0076-8952 doc92000198 024-004-01909-3 751121 20160527191337.0 6174