Columbia subject headings:
Altarpieces, Gothic--Europe--Congresses.
Altarpieces--Conservation and restoration--Congresses.
Church decoration and ornament--Europe--Congresses.
Panel painting, Gothic--Europe--Congresses.
Panel painting--Conservation and restoration--Congresses.
Reliquaries, Gothic--Europe--Congresses.
Harvard subject headings:
Altarpieces, German--Congresses.
Altarpieces, Gothic--Germany--Congresses.
Altarpieces, Medieval--Congresses.
Altarpieces--Conservation and restoration--Congresses.
Art, Gothic--Germany--Congresses.
Christian shrines--Europe--Congresses.
Polyptychs--Congresses.
Princeton subject headings: