Columbia subject headings:
City planning--Italy--Emilia-Romagna.
Plazas--Italy--Emilia-Romagna.
Public buildings--Italy--Emilia-Romagna.
Harvard subject headings:
City planning--Italy--Emilia-Romagna.
Emilia-Romagna (Italy)--Description and travel.
Plazas--Italy--Emilia-Romagna.
Public buildings--Italy--Emilia-Romagna.
Princeton subject headings:
City planning--Italy--Emilia-Romagna.
Plazas--Italy--Emilia-Romagna.
Public buildings--Italy--Emilia-Romagna.