Columbia subject headings:
Europe, Eastern--Politics and government.
World politics--1965-1975.
World politics--1975-1985.
Harvard subject headings:
Europe, Eastern--Politics and government.
World politics--1965-1975
World politics--1975-1985
Princeton subject headings:
Europe, Eastern--Politics and government.
World politics--1965-1975.
World politics--1975-1985.