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Investigation of Portland beryl-mica district Middlesex County, Conn.

Published Year

• 1940-1949 (1)

Subject

• Beryl--Connecticut--Middlesex County (1)
• Mica mines and mining--Connecticut--Middlesex County (1) *

Author

• Boos, Margaret F. (1)
• Maillot, E. E. (1)
• Mosier, McHenry. (1) *

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