Columbia subject headings:
Harvard subject headings:
Basilica di San Petronio (Bologna, Italy)
Mural painting and decoration, Italian--Italy--Bologna.
Mural painting and decoration, Medieval--Italy--Bologna.
Schism, The Great Western, 1378-1417.
Princeton subject headings:
Basilica di San Petronio (Bologna, Italy)
Mural painting and decoration, Italian--Italy--Bologna.
Mural painting and decoration, Medieval--Italy--Bologna.
Schism, The Great Western, 1378-1417.