Columbia subject headings:
Domschatzkammer (Aachen, Germany)--Catalogs.
Ivories, Medieval--Germany--Aachen--Catalogs.
Harvard subject headings:
Domschatzkammer (Aachen, Germany)--Catalogs.
Ivories, Medieval--Catalogs.
Ivories--Germany--Aachen--Catalogs.
Ivory carving--Germany--Aachen--Catalogs.
Princeton subject headings:
Catalogs.
Domschatzkammer (Aachen, Germany)--Catalogs.
Ivories, Medieval--Germany--Aachen--Catalogs.
Ivory carving--Germany--Aachen--Catalogs.