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Creator Personal Names
Forbes, John J. V. (John Joseph Vincent), 1885-1975.
Remove constraint Creator Personal Names: Forbes, John J. V. (John Joseph Vincent), 1885-1975.
Creator Personal Names
Owings, C. W. (Clarence Watson), 1894-
Remove constraint Creator Personal Names: Owings, C. W. (Clarence Watson), 1894-
All Subjects
Coal mines and mining--Safety measures.
Remove constraint All Subjects: Coal mines and mining--Safety measures.
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