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