Columbia subject headings:
Bridges--Italy--Rome--Pictorial works.
Rome (Italy)--Pictorial works.
Tiber River (Italy)--Pictorial works.
Harvard subject headings:
Bridges--Italy--Rome--Pictorial works.
Rome (Italy)--Pictorial works
Tiber River (Italy)--Pictorial works.
Princeton subject headings:
Rome (Italy)--Bridges.
Tiber River (Italy)