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Mining Industry of the United States of America. Supplementing exhibit ... at the Brazil Centennial Exposition ... 1922-1923. By Dr. Thomas T. Read. [With illustrations and a map.]
- "Mining Industry of the United States of America. Supplementing exhibit ... at the Brazil Centennial Exposition ... 1922-1923. By Dr. Thomas T. Read. [With illustrations and a map.]"@en
- "Mining Industry of the United States of America. Supplementing exhibit ... at the Brazil Centennial Exposition ... 1922-1923. By Dr. Thomas T. Read. [With illustrations and a map.]"