Columbia subject headings:
Harvard subject headings:
Architecture--Italy--Emilia-Romagna.
Art--Italy--Emilia-Romagna.
Emilia-Romagna (Italy)--Church history.
Emilia-Romagna (Italy)--History.
Princeton subject headings:
Art, Italian--Italy--Emilia-Romagna.
Art, Medieval--Italy--Emilia-Romagna.