Columbia subject headings:
Harvard subject headings:
Catholic Church--Italy--History--19th century--Bibliography.
Catholic Church--Italy--History--20th century--Bibliography.
Catholic action--Italy--History--Bibliography.
Catholics--Political activity--Italy--History--19th century--Bibliography.
Catholics--Political activity--Italy--History--20th century--Bibliography.
Catholics--Political activity--Italy--History--Bibliography.
Church and social problems--Italy--History--Bibliography.
Church and state--Italy--History--19th century--Bibliography.
Church and state--Italy--History--20th century--Bibliography.
Italy--Church history--19th century--Bibliography.
Italy--Church history--20th century--Bibliography.
Social movements--Religious aspects--Christianity--Bibliography.
Princeton subject headings:
Catholic Church--Italy--History--Bibliography.
Catholics--Italy--History--Bibliography.