V pomosht na profsŭi︠u︡znii︠a︡ aktiv v uchebnite zavedenii︠a︡
Subtitle: sŭvetski dokumenti
By: tekhnicheski redaktor B. Velinov
Series: Biblioteka na profsŭi︠u︡za na rabotnit︠s︡ite po prosvetata i pechata v Bŭlgarii︠a︡ -- No. 4
Publisher: Profizdat
Published: 2014
Place of publication: Sofii︠a︡
Language: bul
Number of pages: 67
Subjects: Sources; History