Columbia subject headings:
Cities and towns, Ancient--Portugal.
Cities and towns, Ancient--Spain.
Romans--Portugal.
Romans--Spain.
Rome--Colonies.
Urbanization--Portugal--History.
Urbanization--Spain--History.
Harvard subject headings:
Cities and towns, Ancient--Spain--Congresses.
Romans--Spain--Congresses
Urbanization--Spain--History--Congresses.
Princeton subject headings:
Cities and towns, Ancient--Portugal--Congresses.
Cities and towns, Ancient--Spain--Congresses.
Romans--Portugal--Congresses.
Romans--Spain--Congresses.
Rome--Colonies--Congresses.
Urbanization--Portugal--History--Congresses.
Urbanization--Spain--History--Congresses.