Columbia subject headings:
Harvard subject headings:
Atomism--Political aspects--Greece--History.
Cosmology, Ancient--Political aspects.
Democracy--Greece--History--To 1500.
Greece--Politics and government--To 146 B.C.
Princeton subject headings:
Atomism--Political aspects--Greece--History.
Cosmology, Ancient--Political aspects.
Democracy--Greece--History--To 1500.
Greece--Politics and government--To 146 B.C.