Columbia subject headings:
France--Relations--Germany.
Germany--Relations--France.
Ruge, Arnold, 1802-1880.
Harvard subject headings:
France--Relations--Germany.
Germany--Relations--France.
Ruge, Arnold, 1802-1880.
Princeton subject headings:
France--Relations (general) with Germany.
Germany--Relations (general) with France.
Ruge, Arnold, 1802-1880.