Columbia subject headings:
France--History--German occupation, 1914-1918--Sources.
France--Intellectual life--20th century--Sources.
World War, 1914-1918--France--Sources.
Harvard subject headings:
France--History--German occupation, 1914-1918--Sources.
France--History--German occupation, 1914-1918.
France--History--Sources--20th century.
France--Intellectual life--20th century--Sources.
France--Intellectual life--20th century.
France--Intellectual life--Sources--20th century.
France--Social life and customs--20th century.
World War, 1914-1918--France
World War, 1914-1918--France--Sources.
Princeton subject headings:
France--History--Sources--German occupation, 1914-1918--History--Sources
France--History--Sources--German occupation, 1914-1918--History--Sources.
France--Intellectual life--Sources--20th century--Intellectual life--Sources.
World War, 1914-1918--France.