Columbia subject headings:
Harvard subject headings:
Labor--France--History--Sources.
Socialism--France--History--Sources.
Socialism--France--Sources.
Working class--France
Working class--France--History--Sources.
World War, 1914-1918--Protest movements--France--Sources.
Princeton subject headings:
France--Politics and government--1914-1940--Sources.
Labor unions--France--Political activity--History--Sources.
Socialism--France--History--Sources.
Working class--France--Political activity--History--Sources.
World War, 1914-1918--Protest movements--France--Sources.