Columbia subject headings:
Harvard subject headings:
Perestroĭka
Russia (Federation)--History.
Russia (Federation)--Politics and government.
Soviet Union--History--1985-1991.
Soviet Union--History.
Soviet Union--Politics and government--1985-1991.
Soviet Union--Politics and government.
Princeton subject headings:
Perestroĭka.
Russia (Federation)--History.
Russia (Federation)--Politics and government.
Soviet Union--History--1985-1991.
Soviet Union--History.
Soviet Union--Politics and government--1985-1991.
Soviet Union--Politics and government.