Columbia subject headings:
Harvard subject headings:
Developing countries--Foreign relations--Soviet Union.
Developing countries--Foreign relations--Treaties.
Soviet Union--Foreign relations administration.
Soviet Union--Foreign relations--Developing countries.
Soviet Union--Foreign relations--Treaties.
Princeton subject headings:
Developing countries--Foreign relations--Soviet Union.
Developing countries--Foreign relations--Treaties.
Soviet Union--Foreign relations administration.
Soviet Union--Foreign relations--Developing countries.
Soviet Union--Foreign relations--Treaties.
Treaties.