Columbia subject headings:
Democracy--Europe, Eastern.
Europe, Eastern--Politics and government--1945-1989.
Opposition (Political science)--Europe, Eastern.
Harvard subject headings:
Democratization--Europe, Central--History--20th century.
Democratization--Europe, Eastern--History--20th century.
Europe, Central--Politics and government--20th century.
Europe, Eastern--Politics and government--20th century.
Regime change--Europe, Central--History--20th century.
Regime change--Europe, Eastern--History--20th century.
Princeton subject headings:
Democracy--Europe, Eastern.
Europe, Eastern--Politics and government--1945-1989.
Opposition (Political science)--Europe, Eastern.