Columbia subject headings:
Sicily (Italy)--Antiquities--Congresses.
Turkey--Antiquities--Congresses.
Harvard subject headings:
Sicily (Italy)--Antiquities--Congresses.
Sicily (Italy)--Civilization--Congresses.
Turkey--Antiquities--Congresses.
Turkey--Civilization--Congresses.
Princeton subject headings:
Sicily (Italy)--Civilization--Congresses.
Turkey--Civilization--Congresses.