Columbia subject headings:
Soviet Union--Politics and government--1985-1991.
World politics--1985-1995.
Harvard subject headings:
Soviet Union--Politics and government--1985-1991.
World politics--1985-1995
Princeton subject headings:
Gorbachev, Mikhail Sergeevich, 1931-2022.
Perestroĭka.
Soviet Union--Economic policy--1986-1991.
Soviet Union--Foreign relations--1985-1991.
Soviet Union--Politics and government--1985-1991.
Soviet Union--Social policy.