Columbia subject headings:
Christianity--Nubia--History.
Nubia--Antiquities.
Nubia--History.
Nubia--Religion.
Harvard subject headings:
Christianity--Nubia.
Nubia--Church history.
Nubia--History.
Princeton subject headings:
Christianity--Nubia--History.
Nubia--Antiquities.
Nubia--History.
Nubia--Religion.