Columbia subject headings:
Egypt--History.
Nubia--Civilization.
Nubia--History.
Sudan--History.
Harvard subject headings:
Egypt--History
Nubia--Civilization.
Nubia--History.
Sudan--History
Princeton subject headings:
Egypt--Antiquities.
Egypt--History--To 332 B.C.
Nubia--History.
Sudan--Antiquities.
Sudan--History.