Columbia subject headings:
Guelfs and Ghibellines.
Milan (Italy)--Economic conditions.
Milan (Italy)--History--To 1535.
Milan (Italy)--Politics and government.
Harvard subject headings:
Guelfs and Ghibellines
Milan (Italy)--History--To 1535.
Milan (Italy)--Social conditions.
Power (Social sciences)--Italy--Milan--History--To 1500.
Princeton subject headings:
Guelfs and Ghibellines.
Milan (Italy)--Economic conditions.
Milan (Italy)--History--To 1535.
Milan (Italy)--Politics and government.