Columbia subject headings:
Industrial relations--Case studies.
Industrial sociology--Case studies.
Machinists--Illinois--Chicago--Case studies.
Marxian school of sociology.
Working class--Case studies.
Harvard subject headings:
Industrial relations--Case studies
Industrial sociology--Case studies.
Machinists--Illinois--Chicago--Case studies.
Marxian school of sociology.
Working class--Case studies.
Princeton subject headings:
Case studies.
Industrial relations--Case studies.
Industrial sociology--Case studies.
Labor--Case studies.