Columbia subject headings:
Greece--Civilization.
Greece--History--To 146 B.C.
Iran--Civilization--To 640.
Harvard subject headings:
Greece--History--To 146 B.C.
Greece--Relations--Iran.
Iran--History--To 640.
Iran--Relations--Greece.
Princeton subject headings:
Greece--Civilization.
Greece--History--To 146 B.C.
Iran--Civilization--To 640.