Columbia subject headings:
Catholic Church--Italy--History.
Church and state--Italy--History.
Papacy--History.
Papal States--History.
Harvard subject headings:
Catholic Church--Italy--History.
Church and state--Italy--History
Papacy--History
Papal States--History.
Princeton subject headings:
Catholic Church--Italy--History.
Church and state--Italy--History.
Papacy--History.
Papal States--History.