Columbia subject headings:
Amphitheaters--Italy--Trieste.
Trieste (Italy)--Buildings, structures, etc.
Harvard subject headings:
Amphitheaters--Italy--Trieste.
Roman Theater (Trieste, Italy)
Theaters--Italy--Trieste.
Trieste (Italy)--Antiquities, Roman.
Trieste (Italy)--Buildings, structures, etc.
Princeton subject headings:
Architecture, Roman--Italy--Trieste.
Marble sculpture, Roman--Italy--Trieste.
Roman Theater (Trieste, Italy)
Theaters--Italy--Trieste--History.
Trieste (Italy)--Antiquities, Roman.