Columbia subject headings:
German language--Study and teaching--France--History--19th century.
German language--Study and teaching--France--History--20th century.
Harvard subject headings:
German language--Study and teaching--France--History--19th century.
German language--Study and teaching--France--History--20th century.
Princeton subject headings:
German language--Study and teaching--France--History--19th century.
German language--Study and teaching--France--History--20th century.