Columbia subject headings:
Architecture, Modern--19th century--Congresses.
Architecture, Modern--20th century--Congresses.
Architecture--Italy--History--19th century--Congresses.
Architecture--Italy--History--20th century--Congresses.
Cities and towns--History--19th century--Congresses.
Cities and towns--History--20th century--Congresses.
Cities and towns--Italy--History--19th century--Congresses.
Cities and towns--Italy--History--20th century--Congresses.
Harvard subject headings:
Architecture--Italy--Congresses.
Cities and towns--Growth--History--20th century--Congresses.
Urban renewal--History--Congresses.
Princeton subject headings: