Columbia subject headings:
Chad--Civilization--French influences.
Chad--History--20th century.
French--Colonization--Chad.
Muslims--Chad--Ethnic identity.
Harvard subject headings:
Chad--Civilization--20th century.
Chad--Cultural policy.
Chad--History--20th century.
French language--Chad.
French--Colonization--Chad.
Muslims--Chad--Ethnic identity.
Princeton subject headings: