Columbia subject headings:
Developing countries--Handbooks, manuals, etc.
Economic development--Handbooks, manuals, etc.
Harvard subject headings:
Developing countries--Economic conditions.
Developing countries--Politics and government.
Developing countries--Social conditions.
Economic development
Princeton subject headings:
Developing countries--Economic conditions.
Developing countries--Politics and government.
Developing countries--Social conditions.
Economic development.