Columbia subject headings:
Bridges--Italy--Florence--Design and construction--History.
Florence (Italy)--Buildings, structure, etc.
Santa Trinita Bridge (Florence, Italy)
Harvard subject headings:
Bridges--Italy--Florence--Design and construction--History.
Florence (Italy)--Buildings, structures, etc.
Santa Trinita Bridge (Florence, Italy)
Princeton subject headings:
Bridges--Italy--Florence--Design and construction--History.
Florence (Italy)--Buildings, structures, etc.
Santa Trinita Bridge (Florence, Italy)