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- catalog contributor b8918134.
- catalog created "1938.]".
- catalog date "1938".
- catalog date "1938.]".
- catalog dateCopyrighted "1938.]".
- catalog extent "11 pp.".
- catalog isPartOf "U. S. Department of Interior. Bureau of Mines. Information Circular 7037".
- catalog issued "1938".
- catalog issued "1938.]".
- catalog language "eng".
- catalog publisher "[Washington. The Department.".
- catalog title "Some instruments and devices that coal mines officials should understand and use.".
- catalog type "text".