Columbia subject headings:
Harvard subject headings:
Greece--Politics and government--146 B.C.-323 A.D.
Opposition (Political science)--Greece.
Opposition (Political science)--History.
Opposition (Political science)--Rome.
Rome--Politics and government--30 B.C.-68 A.D.
Princeton subject headings:
Civilization, Classical.
Greece--Politics and government--146 B.C.-323 A.D.
Opposition (Political science)--Greece.
Opposition (Political science)--Rome.
Rome--Politics and government--30 B.C.-68 A.D.