Columbia subject headings:
France--Politics and government--1914-1940--Congresses.
France--Relations--Germany--Congresses.
Germany--Politics and government--1918-1933--Congresses.
Germany--Relations--France--Congresses.
Harvard subject headings:
France--Foreign relations--1914-1940--Congresses.
France--Foreign relations--Germany--Congresses.
Germany--Foreign relations--1918-1933--Congresses.
Germany--Foreign relations--1933-1945--Congresses.
Germany--Foreign relations--France--Congresses.
Princeton subject headings: