Columbia subject headings:
Greece--Civilization--To 146 B.C.
Greece--Politics and government--To 146 B.C.
Rome--Civilization.
Rome--Politics and government--30 B.C.-476 A.D.
Harvard subject headings:
Civilization, Ancient--Congresses
Civilization, Greco-Roman--Congresses
Greece--Civilization--To 146 B.C.--Congresses.
Greece--Politics and government--To 146 B.C.--Congresses.
Rome--Civilization--Congresses.
Rome--Politics and government--30 B.C.-476 A.D.--Congresses.
Princeton subject headings:
Greece--Civilization--To 146 B.C.
Greece--Politics and government--To 146 B.C.
Rome--Civilization.
Rome--Politics and government--30 B.C.-476 A.D.