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

Investigation of Black Mountain beryl deposit Oxford County, Maine

Published Year

• 1940-1949 (2) *

Subject

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

Author

• Boos, Margaret F. (2) *
• Maillot, E. E. (2)
• Mosier, McHenry. (2)

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