Columbia subject headings:
Perestroĭka.
Soviet Union--Economic conditions--1985-1991.
Soviet Union--Social conditions--1970-1991.
Harvard subject headings:
Perestroĭka.
Soviet Union--Economic policy--1986-1991.
Soviet Union--Politics and government--1985-1991.
Soviet Union--Social policy.
Princeton subject headings:
Perestroĭka.
Soviet Union--Economic conditions--1985-1991.
Soviet Union--Social conditions--1970-1991.