Columbia subject headings:
Soviet Union--Economic conditions--1975-1985--Congresses.
Soviet Union--Politics and government--1953-1985--Congresses.
Soviet Union--Social conditions--1970-1991--Congresses.
Harvard subject headings:
Soviet Union--Economic conditions--1975-1985--Congresses.
Soviet Union--Politics and government--1953-1985--Congresses.
Soviet Union--Social conditions--1970-1991--Congresses.
Princeton subject headings:
Soviet Union--Economic conditions--1976---Congresses.
Soviet Union--Politics and government--1953---Congresses.
Soviet Union--Social conditions--1970-1991--Congresses.