Columbia subject headings:
Cities and towns, Ancient--Portugal.
Excavations (Archaeology)--Portugal.
Portugal--Antiquities.
Harvard subject headings:
Cities and towns, Ancient--Portugal.
Excavations (Archaeology)--Portugal
Iron age--Portugal.
Portugal--Antiquities.
War and society--Portugal--History--To 1500.
Princeton subject headings:
Fortification--Portugal.
Iron age--Portugal.
Portugal--Antiquities.