Columbia subject headings:
Harvard subject headings:
Farnese family.
Parma and Piacenza (Duchy)--History.
Political crimes and offenses--Italy--Parma and Piacenza (Duchy)
Princeton subject headings:
Farnese family.
Parma and Piacenza (Duchy)--Civilization.
Parma and Piacenza (Duchy)--Economic conditions.
Parma and Piacenza (Duchy)--History.