Columbia subject headings:
Architecture--Italy--Congresses.
Architecture--Italy--History--20th century--Congresses.
City planning--Italy--Congresses.
Harvard subject headings:
Architecture--Italy--Congresses.
Città Vallo di Diano (Italy)--History--Congresses.
Città Vallo di Diano (Project)--Congresses.
City planning--Italy--Città Vallo di Diano--Congresses.
Princeton subject headings:
Architecture--Italy--Congresses.
City planning--Italy--Congresses.