Columbia subject headings:
Africa, North--Antiquities.
Africa, North--History, Military.
Africa, North--History--To 647.
Byzantine Empire--History, Military.
Fortification--Africa, North.
Harvard subject headings:
Africa, North--Antiquities, Byzantine.
Africa, North--History, Military.
Africa, North--History--To 647.
Byzantine Empire--History, Military--527-1081.
Excavations (Archaeology)--Africa, North.
Princeton subject headings:
Africa, North--Antiquities, Byzantine.
Africa, North--History, Military.
Africa, North--History--To 647.
Byzantine Empire--History, Military.
Fortification--Africa, North.