Columbia subject headings:
Africa, North--Antiquities, Roman--Congresses.
Africa, North--History--To 647--Congresses.
Cities and towns--Africa, North--History--Congresses.
Romans--Africa, North--History--Congresses.
Harvard subject headings:
Africa, North--Civilization--Congresses.
Cities and towns, Ancient--Africa, North--Congresses.
Romans--Africa, North--Congresses.
Urbanization--Africa, North--History--Congresses.
Princeton subject headings: