Nerushima druzhba
Subtitle: (I︠U︡bileen sbornik v chest na 25-god. ot pobedata na sot︠s︡ialist. revol. v Bŭlgarii︠a︡)
Contributors: T͡SK KPSS. Politicheskoe izdatelʹstvo
Publisher: BKP, Moskva, Politizdat
Published: 1969
Place of publication: Sofii︠a︡
Language: bul
Number of pages: 178
Subjects: Relations
Notes: Issued also in Russian.