Columbia subject headings:
Harvard subject headings:
Architecture, Baroque--Italy--Bologna.
Architecture, Domestic--Italy--Bologna.
Architecture, Domestic--Italy--Pictorial works.
Architecture, Renaissance--Italy--Bologna.
Architecture--Italy--Designs and plans.
Architecture--Italy--Pictorial works.
Bologna (Italy)--Buildings, structures, etc.--Pictorial works.
Palaces--Italy--Bologna.
Palaces--Italy--Pictorial works.
Princeton subject headings:
Architecture, Domestic--Italy--Pictorial works.
Architecture--Italy--Bologna--Designs and plans.
Architecture--Italy--Bologna--Pictorial works.
Bologna (Italy)--Buildings, structures, etc.--Pictorial works.
Palaces--Italy--Pictorial works.