Columbia subject headings:
Architecture, Medieval--Italy, Northern.
Architecture, Medieval--Italy--Piedmont.
Cities and towns, Medieval--Italy, Northern.
Cities and towns, Medieval--Italy--Piedmont.
Harvard subject headings:
Architecture, Medieval--Italy, Northern.
Architecture, Medieval--Italy--Piedmont.
Cities and towns, Medieval--Italy, Northern.
Cities and towns, Medieval--Italy--Piedmont.
Princeton subject headings:
Architecture, Medieval--Italy, Northern.
Architecture, Medieval--Italy--Piedmont.
Cities and towns, Medieval--Italy, Northern.
Cities and towns, Medieval--Italy--Piedmont.