Columbia subject headings:
Gela (Italy)--Antiquities.
Gela (Italy)--Economic conditions.
Gela (Italy)--History.
Greeks--Italy--Gela--History.
Harvard subject headings:
Gela (Italy)--History.
Princeton subject headings:
Gela (Italy)--Antiquities.
Gela (Italy)--Economic conditions.
Gela (Italy)--History.
Greeks--Italy--Gela--History.