Columbia subject headings:
Bologna (Italy)--Church history--Exhibitions.
Christian antiquities--Italy--Bologna--Exhibitions.
Christian art and symbolism--Italy--Bologna--Exhibitions.
Church architecture--Italy--Bologna--Exhibitions.
Harvard subject headings:
Bologna (Italy)--Church history--Exhibitions.
Christian antiquities--Italy--Bologna--Exhibitions.
Christian art and symbolism--Italy--Bologna--Exhibitions.
Church architecture--Italy--Bologna--Exhibitions.
Princeton subject headings:
Bologna (Italy)--Church history--Exhibitions.
Christian antiquities--Italy--Bologna--Exhibitions.
Christian art and symbolism--Italy--Bologna--Exhibitions.
Church architecture--Italy--Bologna--Exhibitions.