Search Constraints
You searched for:
All Subjects
Coal mines and mining--Pennsylvania.
Remove constraint All Subjects: Coal mines and mining--Pennsylvania.
All Subjects
Pneumoconiosis.
Remove constraint All Subjects: Pneumoconiosis.
Subject Topical
Chest--Diseases.
Remove constraint Subject Topical: Chest--Diseases.
Subject Topical
Coal miners--Diseases--Pennsylvania.
Remove constraint Subject Topical: Coal miners--Diseases--Pennsylvania.
Subject Topical
Pneumoconiosis.
Remove constraint Subject Topical: Pneumoconiosis.
1 entry found