Columbia subject headings:
Developing countries--Foreign relations--Congresses.
Soviet Union--Foreign relations--1975-1985--Congresses.
Harvard subject headings:
Developing countries--Foreign relations--Soviet Union--Congresses.
Soviet Union--Foreign relations--Developing countries--Congresses.
Princeton subject headings:
Developing countries--Foreign relations--Soviet Union--Congresses.
Soviet Union--Foreign relations--Developing countries--Congresses.