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Monthly Reports of Investigations, Bureau of Mines, Department of the Interior, February 1920
F. T. EddingfieldFelix Edgar Wormser
其他書名
Gold and Silver
出版U.S. Department of the Interior, Bureau of Mines, 1920
URLhttp://books.google.com.hk/books?id=NpS3rQEACAAJ&hl=&source=gbs_api