Columbia subject headings:
Harvard subject headings:
East and West.
Germany (West)--Foreign relations--Soviet Union.
International relations
Schmidt, Helmut, 1918-2015.
Soviet Union--Foreign relations--Germany (West)
Princeton subject headings:
Detente.
Europe, Eastern--Foreign relations--Germany (West)
Germany (West)--Foreign relations--Europe, Eastern.
Schmidt, Helmut, 1918 December 23-