Columbia subject headings:
Hungary--Foreign relations--Soviet Union.
Hungary--Politics and government--1918-1945.
Hungary--Politics and government--1945-1989.
Soviet Union--Foreign relations--Hungary.
Harvard subject headings:
Hungary--Foreign relations--Soviet Union.
Hungary--Politics and government--1918-1945
Hungary--Politics and government--1945-
Soviet Union--Foreign relations--Hungary.
Princeton subject headings: