Columbia subject headings:
Harvard subject headings:
Tuscany (Italy)--Antiquities, Roman.
Tuscany (Italy)--Antiquities.
Umbria (Italy)--Antiquities, Roman.
Umbria (Italy)--Antiquities.
Princeton subject headings:
Excavations (Archaeology)--Italy--Tiber River Valley--Guidebooks.
Tiber River Valley (Italy)--Antiquities, Roman--Guidebooks.