Columbia subject headings:
Architecture--Italy--Bologna--History--19th century.
Architecture--Italy--Bologna.
City planning--Italy--Bologna.
Harvard subject headings:
Architecture, Modern--19th century--Italy--Bologna.
Architecture--Italy--Bologna.
Bologna (Italy)--Buildings, structures, etc.
City planning--Italy
City planning--Italy--Bologna
Princeton subject headings:
Architecture, Modern--19th century--Italy--Bologna.
Architecture--Italy--Bologna.
City planning--Italy--Bologna.