Columbia subject headings:
Soviet Union--Economic conditions--1985-1991--Congresses.
Soviet Union--Social conditions--1970-1991--Congresses.
Harvard subject headings:
Soviet Union--Economic conditions--1985-1991--Congresses.
Soviet Union--Economic policy--1986-1991--Congresses.
Soviet Union--Social conditions--1970-1991--Congresses.
Princeton subject headings:
Soviet Union--Economic conditions--1985-1991--Congresses.
Soviet Union--Social conditions--1970-1991--Congresses.