Columbia subject headings:
Harvard subject headings:
Italy--History--1268-1492.
Italy--History--1492-1559.
Milan (Italy)--History--To 1535.
Sforza family.
Princeton subject headings:
Italy--History--1268-1492.
Italy--History--1492-1559.
Milan (Italy)--History--To 1535.
Sforza family.