Columbia subject headings:
Elite (Social sciences)--Chad--Ouaddai.
Ouaddaï (Chad)--Social conditions.
Harvard subject headings:
Elite (Social sciences)--Chad--Ouaddai.
Ouaddaï (Chad)--Social conditions.
Princeton subject headings:
Chad--Politics and government.
Elite (Social sciences)--Chad--Ouaddai.
Ouaddaï (Chad)--Social conditions.