Columbia subject headings:
Excavations (Archaeology)--Italy--Tivoli.
Hadrian's Villa (Tivoli, Italy)
Tivoli (Italy)--Antiquities, Roman.
Harvard subject headings:
Excavations (Archaeology)--Italy--Tivoli.
Greek Theater (Hadrian's Villa, Tivoli, Italy)
Tivoli (Italy)--Antiquities, Roman.
Princeton subject headings:
Excavations (Archaeology)--Italy--Tivoli.
Tivoli (Italy)--Antiquities, Roman.