Search Constraints

You searched for: Creator Personal Names Crawford, George M. Remove constraint Creator Personal Names: Crawford, George M. Creator Personal Names Dessauer, P. Remove constraint Creator Personal Names: Dessauer, P. All Subjects Coal mines and mining--Pennsylvania. Remove constraint All Subjects: Coal mines and mining--Pennsylvania. All Subjects Lungs--Dust diseases. Remove constraint All Subjects: Lungs--Dust diseases. All Subjects Pneumoconiosis. Remove constraint All Subjects: Pneumoconiosis.

Search Results