Search Constraints
You searched for:
All Creators
Crawford, George M.
Remove constraint All Creators: Crawford, George M.
All Subjects
Chest radiography.
Remove constraint All Subjects: Chest radiography.
All Subjects
Coal miners--Diseases--Pennsylvania.
Remove constraint All Subjects: Coal miners--Diseases--Pennsylvania.
All Subjects
Lungs--Dust diseases.
Remove constraint All Subjects: Lungs--Dust diseases.
All Subjects
Respiratory organs--Obstructions.
Remove constraint All Subjects: Respiratory organs--Obstructions.
Subject Topical
Chest radiography.
Remove constraint Subject Topical: Chest radiography.
Subject Topical
Coal mines and mining--Pennsylvania.
Remove constraint Subject Topical: Coal mines and mining--Pennsylvania.
1 entry found