Columbia subject headings:
City-states--Congresses.
City-states--Greece--Congresses.
Greece--Politics and government--To 146 B.C.--Congresses.
Harvard subject headings:
City-states--Congresses.
City-states--Greece--Congresses.
Greece--Politics and government--To 146 B.C.--Congresses.
Princeton subject headings:
City-states--Congresses.
City-states--Greece--Congresses.
Greece--Politics and government--To 146 B.C.--Congresses.