Columbia subject headings:
Developing countries--Economic conditions.
French language--Social aspects--Developing countries.
Language and languages--Economic aspects--Developing countries.
Language policy--Developing countries.
Sociolinguistics--Developing countries.
Harvard subject headings:
French language--Developing countries.
Language and languages--Economic aspects--Developing countries.
Language and languages--Political aspects
Language policy--Developing countries.
Princeton subject headings:
Economic development.
Language and culture.