Columbia subject headings:
Soviet Union--Economic policy--1981-1985.
Soviet Union--Politics and government--1985-1991.
Harvard subject headings:
Gorbachev, Mikhail Sergeevich, 1931-
Soviet Union--Economic policy--1986-1991.
Soviet Union--Politics and government--1985-1991.
Princeton subject headings:
Soviet Union--Economic policy--20th century.
Soviet Union--Politics and government--1982-.