Columbia subject headings:
Harvard subject headings:
Language and languages--Economic aspects--Africa, Central.
Language and languages--Economic aspects--Africa, French-speaking Equatorial.
Language and languages--Economic aspects--Africa, French-speaking West.
Sociolinguistics--Africa, Central.
Sociolinguistics--Africa, French-speaking Equatorial.
Sociolinguistics--Africa, French-speaking West.
Princeton subject headings:
Africa, Central--Languages--Social aspects.
Africa, French-speaking Equatorial--Languages--Social aspects.
Africa, French-speaking West--Languages--Social aspects.
African languages--Social aspects--Africa, Central.
African languages--Social aspects--Africa, French-speaking Equatorial.
African languages--Social aspects--Africa, French-speaking West.
Language and languages--Economic aspects--Africa, Central.
Language and languages--Economic aspects--Africa, French-speaking Equatorial.
Language and languages--Economic aspects--Africa, French-speaking West.