Columbia subject headings:
Harvard subject headings:
France--Foreign relations--Germany--Rhineland--Congresses.
Rhineland (Germany)--Foreign relations--France--Congresses.
Rhineland (Germany)--Politics and government--Congresses.
Princeton subject headings:
France--Foreign relations--Germany--Rhineland--Congresses.
Rhineland (Germany)--Foreign relations--France--Congresses.
Rhineland (Germany)--Politics and government--Congresses.