Columbia subject headings:
Catholic Church--Foreign relations--Italy.
Church and state--Italy--History--19th century.
Church and state--Italy--History--20th century.
Italy--Foreign relations--Catholic Church.
Harvard subject headings:
Catholic Church--Foreign relations--Italy.
Church and state--Italy--History--19th century
Church and state--Italy--History--20th century
Italy--Foreign relations--Catholic Church.
Princeton subject headings: