Columbia subject headings:
Geopolitics--Russia.
Geopolitics--Soviet Union.
Soviet Union--Foreign relations.
Soviet Union--Politics and government.
Harvard subject headings:
Geopolitics--Russia.
Geopolitics--Soviet Union.
Soviet Union--Foreign relations.
Soviet Union--Politics and government.
Princeton subject headings:
Geopolitics--Russia.
Geopolitics--Soviet Union.
Soviet Union--Foreign relations.
Soviet Union--Politics and government.