Bi︠a︡la kniga za bŭlgarskoto obrazovanie i nauka
By: Ministerstvo na obrazovanieto i naukata
Edition: 1. izd.
Publisher: Universitetsko izd-vo "Sv. Kliment Okhridski"
Published: 1992
Place of publication: Sofii︠a︡
Language: bul
Number of pages: 351
Subjects: Education