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Creator Personal Names
Beatty, J. A.
Remove constraint Creator Personal Names: Beatty, J. A.
Subject Topical
Coal miners--Diseases--Pennsylvania.
Remove constraint Subject Topical: Coal miners--Diseases--Pennsylvania.
Subject Topical
Lungs--Dust diseases.
Remove constraint Subject Topical: Lungs--Dust diseases.
Subject Topical
Pneumoconiosis.
Remove constraint Subject Topical: Pneumoconiosis.
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