Columbia subject headings:
Harvard subject headings:
Museum Idar-Oberstein.
Princeton subject headings:
Art objects--Germany (West)--Idar-Oberstein--Catalogs.
Gems--Germany (West)--Idar-Oberstein--Catalogs.
Mineralogy--Germany (West)--Idar-Oberstein--Catalogs.
Museum Idar-Oberstein--Catalogs.