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
Coal mines and mining--Pennsylvania.
Remove constraint Subject Topical: Coal mines and mining--Pennsylvania.
Subject Topical
Disability insurance--Pennsylvania.
Remove constraint Subject Topical: Disability insurance--Pennsylvania.
Subject Topical
Lungs--Dust diseases.
Remove constraint Subject Topical: Lungs--Dust diseases.
1 entry found