Columbia subject headings:
Architecture, Medieval--Italy--Abruzzo--Congresses.
Art, Medieval--Italy--Abruzzo--Congresses.
Christian art and symbolism--Italy--Abruzzo--Medieval, 500-1500--Congresses.
Harvard subject headings:
Art, Italian--Italy--Abruzzo--Congresses.
Art, Medieval--Italy--Abruzzo--Congresses.
Trade routes--Italy--Abruzzo--History--Congresses.
Princeton subject headings:
Architecture, Medieval--Italy--Abruzzo--Congresses.
Art, Medieval--Italy--Abruzzo--Congresses.
Christian art and symbolism--Italy--Abruzzo--Medieval, 500-1500--Congresses.