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