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Creator Personal Names
Bristol, Leonard J.
Remove constraint Creator Personal Names: Bristol, Leonard J.
Subject Topical
Chest radiography.
Remove constraint Subject Topical: Chest radiography.
Subject Topical
Coal miners--Diseases--Diagnosis.
Remove constraint Subject Topical: Coal miners--Diseases--Diagnosis.
Subject Topical
Lungs--Dust diseases--Diagnosis.
Remove constraint Subject Topical: Lungs--Dust diseases--Diagnosis.
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