Columbia subject headings:
Architecture--Italy--Florence.
City planning--Italy--Florence.
Florence (Italy)--Description and travel.
Plazas--Italy--Florence.
Harvard subject headings:
Architecture--Italy--Florence
City planning--Italy--Florence
Florence (Italy)--Description and travel.
Plazas--Italy--Florence.
Princeton subject headings:
Architecture--Italy--Florence.
City planning--Italy--Florence.
Florence (Italy)--Description and travel.
Plazas--Italy--Florence.