Columbia subject headings:
Confédération générale du travail--History--Congresses.
Jouhaux, Léon, 1879-1954--Congresses.
Labor unions--France--Officials and employees--Biography--Congresses.
Harvard subject headings:
Confédération générale du travail--History--Congresses.
Jouhaux, Léon, 1879-1954--Congresses.
Labor unions--France--History--Congresses.
Labor unions--France--Officials and employees--Biography--Congresses.
Princeton subject headings:
Confédération générale du travail--History--Congresses.
Jouhaux, Léon, 1879-1954--Congresses.
Labor unions--France--History--Congresses.
Labor unions--France--Officials and employees--Biography--Congresses.