Columbia subject headings:
Harvard subject headings:
Kievan Rus--History.
Perestroĭka
Russia (Federation)--History.
Russia--History.
Russia--Social conditions.
Soviet Union--History.
Soviet Union--Intellectual life.
Soviet Union--Politics and government.
Soviet Union--Social conditions.
Princeton subject headings:
Russia (Federation)--History.
Russia--History.
Soviet Union--History.