Columbia subject headings:
Milan (Italy)--History--To 1535.
Sforza family.
Visconti family.
Harvard subject headings:
Milan (Italy)--History--To 1535.
Sforza family.
Visconti family.
Princeton subject headings:
Milan (Italy)--History--To 1535.
Sforza family--History.
Visconti family--History.