Columbia subject headings:
Harvard subject headings:
Confédération générale du travail--History--20th century.
Labor movement--France--Ardennes--History--20th century.
Labor unions--France--Ardennes--History--20th century.
Princeton subject headings:
Confédération générale du travail--History--20th century.
Labor movement--France--Ardennes--History--20th century.
Labor unions--France--Ardennes--History--20th century.