Columbia subject headings:
Borno State (Nigeria)--History.
Kanem-Bornu Empire--History.
Harvard subject headings:
Borno State (Nigeria)--History.
Colonial administrators--Nigeria--Borno State.
Great Britain--Colonies--Nigeria.
Kanem-Bornu Empire--History.
Nigeria--History.
Princeton subject headings:
Borno State (Nigeria)--History.
Kanem-Bornu Empire--History.