Columbia subject headings:
Syndicalism--History.
Harvard subject headings:
Direct action--History.
Direct action.
Labor unions--France--History
Labor unions--History
Syndicalism--France--History.
Syndicalism--France.
Syndicalism--History.
Syndicalism--Philosophy.
Princeton subject headings:
Direct action--History.
Labor unions--France--History.
Labor unions--History.
Syndicalism--France--History.
Syndicalism--History.