Columbia subject headings:
Confédération générale du travail--History--20th century--Congresses.
Confédération générale du travail. Congrès (9th : 1906 : Amiens, France)--Congresses.
Labor unions--France--History--20th century--Congresses.
Syndicalism--France--History--20th century--Congresses.
Working class--Political activity--France--History--20th century--Congresses.
Harvard subject headings:
Anarchism--France--History--20th century.
Labor unions--France--History--20th century.
Syndicalism--France--History--20th century.
Princeton subject headings:
Anarchism--France--History--20th century.
Labor unions--France--History--20th century.
Syndicalism--France--History--20th century.