Columbia subject headings:
Perestroĭka.
Soviet Union--Foreign relations--1975-1985.
Soviet Union--Politics and government--1985-1991.
World politics--1985-1995.
Harvard subject headings:
Perestroĭka
Soviet Union--Foreign relations--1975-1985
Soviet Union--Politics and government--1985-1991
World politics--1985-1995
Princeton subject headings:
Soviet Union--Foreign relations--1975-.
Soviet Union--Politics and government--1982-.
World politics--1985-1995.