Columbia subject headings:
Church and state--Italy--History--19th century--Sources.
Church and state--Italy--History--20th century--Sources.
Italy--Church history--19th century--Sources.
Italy--Church history--20th century--Sources.
Harvard subject headings:
Church and state--Italy--History--19th century--Sources.
Church and state--Italy--History--20th century--Sources.
Italy--Church history--19th century--Sources.
Italy--Church history--20th century--Sources.
Princeton subject headings:
Church and state--Italy--History--19th century--Sources.
Church and state--Italy--History--20th century--Sources.
Italy--Church history--19th century--Sources.
Italy--Church history--20th century--Sources.