Columbia subject headings:
Harvard subject headings:
Art, Byzantine--Congresses.
Art, Scandinavian--Byzantine influences--Congresses.
Byzantine Empire--Relations--Scandinavia--Congresses.
Scandinavia--Civilization--Byzantine influences--Congresses.
Scandinavia--Relations--Byzantine Empire--Congresses.
Varangians--Congresses.
Princeton subject headings:
Art, Scandinavian--Byzantine influences--Congresses.
Byzantine Empire--Civilization--Congresses.
Scandinavia--Civilization--Byzantine influences--Congresses.
Varangians--Congresses.