[Inquiries on rheumatism in coal miners of the Ruhr district].
D003031:Coal; D006801:Humans; D008906:Mining; D009784:Occupational Diseases; D012106:Research; D012216:Rheumatic Diseases
D003031:Coal
MINING; OCCUPATIONAL DISEASES; RHEUMATISM
Erhebungen über Rheumatismus bei Untertagebergleuten einer Steinkohlenzeche des Ruhrgebietes.