Columbia subject headings:
Architecture, Gothic--Italy--Piacenza--Exhibitions.
Architecture--Italy--Piacenza--Exhibitions.
Art, Gothic--Italy--Piacenza--Exhibitions.
Art, Italian--Italy--Piacenza--Exhibitions.
Christian art and symbolism--Italy--Piacenza--Medieval, 500-1500--Exhibitions.
Harvard subject headings:
Art, Gothic--Italy--Piacenza--Exhibitions.
Art, Italian--Italy--Piacenza--Exhibitions.
Christian art and symbolism--Medieval, 500-1500--Italy--Piacenza--Exhibitions.
Princeton subject headings:
Art, Gothic--Italy--Piacenza--Exhibitions.
Art, Italian--Italy--Piacenza--Exhibitions.
Christian art and symbolism--Medieval, 500-1500--Italy--Piacenza--Exhibitions.