Columbia subject headings:
Harvard subject headings:
George, of Antioch, -1151 or 1152--Congresses.
Greeks--Italy--Sicily--Congresses.
Sicily (Italy)--Antiquities, Byzantine--Congresses.
Sicily (Italy)--Civilization--Congresses.
Sicily (Italy)--Foreign relations--Congresses.
Sicily (Italy)--History--1016-1194--Congresses.
Sicily (Italy)--History--Roger II, 1105-1154--Congresses.
Sicily (Italy)--Politics and government--To 1282--Congresses.
Princeton subject headings:
George, of Antioch, d. 1151 or 1152--Congresses.
Greeks--Italy--Sicily--Antiquities--Congresses.
Sicily (Italy)--Antiquities, Byzantine--Congresses.
Sicily (Italy)--Politics and government--To 1282--Congresses.