Columbia subject headings:
France--History--German occupation, 1940-1945.
World War, 1939-1945--Underground movements--France.
Harvard subject headings:
France--History--German occupation, 1940-1945.
Immigrants--France--Political activity.
Parti communiste français. Main d'oeuvre immigré.
World War, 1939-1945--Underground movements--France.
Princeton subject headings:
World War, 1939-1945--Underground movements--France.