Columbia subject headings:
Harvard subject headings:
Germany (East)--Foreign relations--Congresses.
Germany--Foreign relations--Congresses.
Germany--Politics and government--1945-1990--Congresses.
Princeton subject headings:
Germany (East)--Foreign relations--Congresses.
Germany (East)--Foreign relations--Germany (West)--Congresses.
Germany (West)--Foreign relations--1982-1990--Congresses.
Germany (West)--Foreign relations--Germany (East)--Congresses.
Germany--Foreign relations--1945---Congresses.