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You searched for: All Creators Baier, Edward J. Remove constraint All Creators: Baier, Edward J. All Subjects Chest--Diseases. Remove constraint All Subjects: Chest--Diseases. All Subjects Coal miners--Diseases--Pennsylvania. Remove constraint All Subjects: Coal miners--Diseases--Pennsylvania. Subject Topical Chest--Diseases. Remove constraint Subject Topical: Chest--Diseases. Subject Topical Coal mines and mining--Pennsylvania. Remove constraint Subject Topical: Coal mines and mining--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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