Spravochnik /
Bŭlgarska akademii︠a︡ na naukite.
Brankov, G. Ĭ.(Georgi Ĭordanov),1913-
Sofii︠a︡ : Bʺulgarckata akademii︠a︡ na naukite
Description based on: 1969.
Bŭlgarska akademii︠a︡ na naukite