Columbia subject headings:
Gorbachev, Mikhail Sergeevich, 1931---Political and social views.
Russia (Federation)--History--1991---Philosophy.
Soviet Union--History--Philosophy.
World politics--1989-
Harvard subject headings:
Gorbachev, Mikhail Sergeevich, 1931---Political and social views.
Russia (Federation)--History--1991---Philosophy.
Soviet Union--History--Philosophy.
World politics--1989-
Princeton subject headings:
Soviet Union--History--Philosophy.