Columbia subject headings:
Architecture--Conservation and restoration--Congresses.
Architecture--Conservation and restoration--Italy--Sicily--History--20th century--Congresses.
Brandi, Cesare--Congresses.
Harvard subject headings:
Architecture--Conservation and restoration--Italy--Congresses.
Art historians--Italy--Congresses.
Brandi, Cesare--Congresses.
Princeton subject headings:
Architecture--Conservation and restoration--Italy--Congresses.
Art historians--Italy--Congresses.
Brandi, Cesare--Congresses.