Columbia subject headings:
Harvard subject headings:
City-states--Italy--History.
Italy--History--1268-1492.
Italy--Politics and government--1268-1559.
Local government--Italy--History.
Municipal government--Italy--History.
Princeton subject headings:
City-states--Italy--History.
Italy--History--1268-1492.
Italy--Politics and government--1268-1559.
Local government--Italy--History.
Municipal government--Italy--History.