Columbia subject headings:
Germany--Foreign relations--1918-1933.
Germany--Foreign relations--Europe, Eastern.
Harvard subject headings:
Europe, Eastern--History--1918-1945--Congresses.
Europe, Eastern--Relations--Germany--Congresses.
Germany--Relations--Europe, Eastern--Congresses.
Princeton subject headings:
Europe, Eastern--History--1918-1945--Congresses.
Europe, Eastern--Relations--Germany--Congresses.
Germany--Relations--Europe, Eastern--Congresses.