Columbia subject headings:
Communism--Soviet Union--Congresses.
Soviet Union--Economic policy--1981-1985.
Soviet Union--Social policy.
Harvard subject headings:
Soviet Union--Economic policy--1986-1991.
Soviet Union--Social policy.
Princeton subject headings:
Communism--Soviet Union--Congresses.
Soviet Union--Economic policy--1986-1991.
Soviet Union--Social policy.