Columbia subject headings:
France--History--1914-1940.
France--History--German occupation, 1914-1918--Economic aspects.
Labor movement--France.
Working class--France.
World War, 1914-1918--Economic aspects--France.
Harvard subject headings:
France--History--1914-
France--History--1914-1940.
Labor movement--France
Labor--France
Working class--France
World War, 1914-1918--Economic aspects--France
Princeton subject headings:
France--History--German occupation, 1914-1918--Economic aspects.
Labor movement--France.
World War, 1914-1918--Economic aspects--France.