Columbia subject headings:
Chad--Description and travel.
Chad--History.
Chad--Politics and government--To 1960.
Colonial administrators--France--Biography.
France--Colonies--Africa--Administration.
Harvard subject headings:
Chad--Description and travel
Chad--History
Chad--Politics and government--To 1960
Colonial administrators--France--Biography
France--Colonies--Africa--Administration.
Le Cornec, Jacques.
Princeton subject headings: