Columbia subject headings:
Harvard subject headings:
Gorbachev, Mikhail Sergeevich, 1931-
Presidents--Russia (Federation)--Biography
Presidents--Soviet Union--Biography.
Soviet Union--Politics and government--1953-1985
Soviet Union--Politics and government--1985-1991.
Princeton subject headings:
Presidents--Russia (Federation)--Biography.
Presidents--Soviet Union--Biography.
Soviet Union--Politics and government--1953-1985.
Soviet Union--Politics and government--1985-1991.