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Creator Personal Names
Beatty, J. A.
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Creator Personal Names
Dessauer, P.
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All Subjects
Lungs--Dust diseases.
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All Subjects
Respiratory organs--Obstructions.
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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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