Kratka bŭlgarska entsiklopedii︠a ︡
By: [Glaven redaktor Vladimir Georgiev]
Publisher: Izd-vo na Bŭlgarska akademiia na naukite
Published: 1963
Place of publication: Sofii͡a
Language: bul
Notes: At head of title : Bŭlgarska akademi︠a ︡na naukite.

Each volume also has special title page.