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You searched for: Creator Personal Names Pendergrass, Eugene Percival, 1895- Remove constraint Creator Personal Names: Pendergrass, Eugene Percival, 1895- All Subjects Lungs--Dust diseases--Diagnosis. Remove constraint All Subjects: Lungs--Dust diseases--Diagnosis. Subject Topical Coal mines and mining--Pennsylvania. Remove constraint Subject Topical: Coal mines and mining--Pennsylvania.

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