Columbia subject headings:
Harvard subject headings:
Art, Byzantine--Congresses.
Goldwork, Byzantine--Congresses.
Jewelry, Byzantine--Congresses.
Religious articles--Congresses.
Princeton subject headings:
Christian art and symbolism--Medieval, 500-1500--Congresses.
Goldwork, Byzantine--Congresses.
Jewelry, Byzantine--Congresses.
Religious articles--Congresses.