Columbia subject headings:
Catholic church buildings--Italy--Bologna (Province)--History--Bibliography.
Church architecture--Italy--Bologna (Province)--History--Bibliography.
Parishes--Italy--Bologna (Province)--History--Bibliography.
Harvard subject headings:
Princeton subject headings:
Catholic church buildings--Italy--Bologna (Province)--History--Bibliography.
Church architecture--Italy--Bologna (Province)--History--Bibliography.
Parishes--Italy--Bologna (Province)--History--Bibliography.