Columbia subject headings:
Architecture--Italy--History--20th century--Exhibitions.
City planning--Italy--History--20th century--Exhibitions.
Plazas--Italy--Exhibitions.
Harvard subject headings:
Architecture, Modern--20th century--Italy--Exhibitions.
City planning--Italy--History--20th century--Exhibitions.
Plazas--Italy--Exhibitions.
Princeton subject headings:
Architecture--Italy.
City planning--Italy.
Plazas--Italy.