Columbia subject headings:
Communist countries--Foreign economic relations--Developing countries.
Developing countries--Economic conditions.
Developing countries--Foreign economic relations--Communist countries.
Developing countries--Foreign economic relations.
Harvard subject headings:
Communist countries--Foreign economic relations--Developing countries.
Developing countries--Economic conditions.
Developing countries--Foreign economic relations--Communist countries.
Developing countries--Foreign economic relations.
Princeton subject headings:
Communist countries--Foreign economic relations--Developing countries.
Developing countries--Economic conditions.
Developing countries--Foreign economic relations--Communist countries.
Developing countries--Foreign economic relations.