Columbia subject headings:
Ethics.
Giovanni, da Ravenna, 1343-1408.
Italy--Politics and government--1268-1559.
Political science--Early works to 1800.
Harvard subject headings:
Ethics.
Giovanni, da Ravenna, 1343-1408.
Italy--Politics and government--1268-1559.
Political science--Early works to 1800
Princeton subject headings:
Ethics.
Giovanni, da Ravenna, 1343-1408.
Italy--Politics and government--1268-1559.
Political science--Early works to 1800.