Columbia subject headings:
Harvard subject headings:
Germany--Foreign relations--Soviet Union.
Soviet Union--Foreign relations--1917-1945.
Soviet Union--Foreign relations--Germany.
World War, 1939-1945--Diplomatic history.
Princeton subject headings:
Germany (East)--Foreign relations--Soviet Union.
Germany--Relations--Russia.
Germany--Relations--Soviet Union.
Russia--Relations--Germany.
Soviet Union--Foreign relations--Germany (East).
Soviet Union--Relations--Germany.