Columbia subject headings:
Basilica di San Petronio (Bologna, Italy)
Jacopo, della Quercia, approximately 1374-1438.
Relief (Sculpture)--Conservation and restoration--Italy--Bologna.
Harvard subject headings:
Princeton subject headings:
Basilica di San Petronio (Bologna, Italy)--Facciata.
Jacopo, della Quercia, approximately 1374-1438.
Relief (Sculpture)--Conservation and restoration--Italy--Bologna.