Columbia subject headings:
Common good in literature--History--To 1500--Congresses.
Common good--Political aspects--History--To 1500--Congresses.
Common good--Religious aspects--History--To 1500--Congresses.
Italy--Politics and government--1268-1559--Congresses.
Italy--Politics and government--476-1268--Congresses.
Political science--Philosophy--History--To 1500--Congresses.
Harvard subject headings:
Civilization, Medieval--Congresses
Common good--History--To 1500--Congresses.
Political science--History--To 1500--Congresses.
Princeton subject headings:
Civilization, Medieval--Congresses.
Common good--History--To 1500--Congresses.
Political science--History--To 1500--Congresses.