Columbia subject headings:
History--Political aspects--Italy.
Italy--Politics and government--1268-1559.
Italy--Politics and government--1559-1789.
Harvard subject headings:
History--Political aspects--Italy.
Italy--Politics and government--1268-1559.
Italy--Politics and government--1559-1789.
Princeton subject headings:
History--Political aspects--Italy.
Italy--Politics and government--1268-1559.
Italy--Politics and government--1559-1789.