Columbia subject headings:
French language--20th century--History.
World War, 1914-1918--Personal narratives.
Written communication--France--History--20th century.
Harvard subject headings:
French language--20th century--History.
World War, 1914-1918--Personal narratives
Written communication--France--History--20th century.
Princeton subject headings:
French language--20th century--History.
World War, 1914-1918--Personal narratives.
Written communication--France--History--20th century.