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Creator Personal Names
Crawford, George M.
Remove constraint Creator Personal Names: Crawford, George M.
Creator Personal Names
Ortmeyer, Carl E.
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All Subjects
Lungs--Dust diseases.
Remove constraint All Subjects: Lungs--Dust diseases.
Subject Topical
Coal miners--Diseases--Pennsylvania.
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Subject Topical
Lungs--Dust diseases.
Remove constraint Subject Topical: Lungs--Dust diseases.
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