Columbia subject headings:
Soviet Union--Foreign relations--1917-1945.
Soviet Union--Foreign relations--1945-1991.
Soviet Union--History.
Soviet Union--Politics and government.
Harvard subject headings:
Cold War
Marshall Plan
Soviet Union--Foreign relations--1917-1945
Soviet Union--Foreign relations--1945-1991
Soviet Union--History
Soviet Union--Politics and government
Vietnam War, 1961-1975
Princeton subject headings:
Soviet Union--Foreign relations--1917-1945.
Soviet Union--Foreign relations--1945-1991.
Soviet Union--History.
Soviet Union--Politics and government.