Columbia subject headings:
Germany (East)--Foreign relations--Soviet Union--Congresses.
Germany (East)--Politics and government--Congresses.
Historiography--Germany (East)
Historiography--Germany (East)--Congresses.
Soviet Union--Foreign relations--Germany (East)--Congresses.
Harvard subject headings:
Germany (East)--Foreign relations--Soviet Union--Congresses.
Germany (East)--History--Congresses.
Germany (East)--Politics and government--Congresses.
Historiography--Germany (East)
Historiography--Germany (East)--Congresses.
Soviet Union--Foreign relations--Germany (East)--Congresses.
Princeton subject headings:
Germany (East)--History--Congresses.
Germany (East)--Politics and government--Congresses.