Columbia subject headings:
Africa, Southern--Foreign relations--Soviet Union.
Soviet Union--Foreign relations--Africa, Southern.
Soviet Union--Foreign relations--Developing countries.
Harvard subject headings:
Africa, Southern--Foreign relations--Soviet Union.
Developing countries--Foreign relations--Soviet Union.
Soviet Union--Foreign relations--1917-1945.
Soviet Union--Foreign relations--Africa, Southern.
Soviet Union--Foreign relations--Developing countries.
Princeton subject headings: