Columbia subject headings:
Harvard subject headings:
Arkheologicheski institut i muzeĭ (Bŭlgarska akademii͡a na naukite)--Catalogs.
Cameos--Bulgaria--Sofia--Catalogs.
Gems, Ancient--Catalogs.
Gems--Bulgaria--Sofia--Catalogs.
Princeton subject headings:
Arkheologicheski institut i muzeĭ (Bŭlgarska akademii︠a︡ na naukite)--Catalogs.
Cameos--Bulgaria--Sofia--Catalogs.
Gems, Ancient--Catalogs.
Gems--Bulgaria--Sofia--Catalogs.