Columbia subject headings:
Ravenna (Italy)--Antiquities, Roman.
Harvard subject headings:
Excavations (Archaeology)--Italy--Ravenna.
Ravenna (Italy)--Antiquities, Roman.
Ravenna (Italy)--Antiquities.
Princeton subject headings:
Excavations (Archaeology)--Italy--Ravenna.
Ravenna (Italy)--Antiquities, Roman.