Columbia subject headings:
Europe--Politics and government--1918-1945.
Europe--Politics and government--1945-
Soviet Union--Foreign relations--1945-1991.
Harvard subject headings:
Europe--Politics and government--1918-1945.
Europe--Politics and government--1945-
Soviet Union--Foreign relations--1945-1991.
Princeton subject headings:
Europe--Politics and government--1918-1945.
Europe--Politics and government--1945-
Soviet Union--Foreign relations--1945-1991.