Columbia subject headings:
Aragon (Spain)--History.
Ebro River Valley (Spain)--Antiquities, Roman.
Ebro River Valley (Spain)--History.
Spain--History--Roman period, 218 B.C.-414 A.D.
Harvard subject headings:
Ebro River Valley (Spain)--Antiquities, Roman.
Ebro River Valley (Spain)--History.
Excavations (Archaeology)--Spain--Ebro River Valley.
Romans--Spain--Ebro River Valley.
Princeton subject headings: