Columbia subject headings:
Harvard subject headings:
Goldwork--Europe--Congresses.
Metal-work--Europe--Congresses.
Polychromy--Europe--Congresses.
Princeton subject headings:
Art metal-work, Medieval--Congresses.
Art metal-work, Prehistoric--Congresses.
Europe--Antiquities--Congresses.
Germany--Antiquities--Congresses.
Metal-work, Medieval--Congresses.
Metal-work, Prehistoric--Congresses.