Columbia subject headings:
Bulgaria--Antiquities--Exhibitions.
Greece--Antiquities--Exhibitions.
Thrace--Antiquities--Exhibitions.
Thrace--Civilization--Exhibitions.
Harvard subject headings:
Art, Thracian--Exhibitions.
Bulgaria--Antiquities--Exhibitions.
Greece--Antiquities--Exhibitions.
Thrace--Antiquities--Exhibitions.
Thrace--Civilization--Exhibitions.
Princeton subject headings:
Bulgaria--Antiquities.
Greece--Antiquities.
Thrace--Antiquities.
Thrace--Civilization.