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Creator Personal Names
Butcher, D. F.
Remove constraint Creator Personal Names: Butcher, D. F.
Creator Personal Names
Reger, Robert B.
Remove constraint Creator Personal Names: Reger, Robert B.
Subject Topical
Coal miners--Diseases.
Remove constraint Subject Topical: Coal miners--Diseases.
Subject Topical
Lungs--Dust diseases--Diagnosis.
Remove constraint Subject Topical: Lungs--Dust diseases--Diagnosis.
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