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Feldspar mining and milling :near Keene, New Hampshire

Published Year

• 1920-1929 (1)

Subject

• Feldspar mines and mining (1)
• Feldspar mines and mining--New Hampshire (1)
• Feldspar--New Hampshire (1)
• Felspar (1) *
• Ore-dressing (1)

Author

• Ladoo, Raymond B. (1) *

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