Columbia subject headings:
Political participation--Greece--History--To 1500.
Political participation--Rome--History.
Voting age--History.
Harvard subject headings:
Political participation--Greece--History--To 1500.
Political participation--Rome--History.
Voting age--History.
Princeton subject headings:
Political participation--Greece--History--To 1500.
Political participation--Rome--History.
Voting age--History.