Columbia subject headings:
Harvard subject headings:
Architecture, Greek--Italy--Sicily--Congresses.
Architecture--Italy--Sicily--History--Congresses.
Cities and towns--Italy--Sicily--History--Congresses.
City planning--Italy--Sicily--History--Congresses.
Excavations (Archaeology)--Italy--Sicily--Congresses.
Greeks--Italy--Sicily--History--Congresses.
Sicily (Italy)--Antiquities, Greek--Congresses.
Sicily (Italy)--Antiquities--Congresses.
Princeton subject headings:
Architecture--Italy--Sicily--History--Congresses.
Cities and towns--Italy--Sicily--History--Congresses.
City planning--Italy--Sicily--History--Congresses.
Greeks--Italy--Sicily--History--Congresses.
Sicily (Italy)--Antiquities--Congresses.