Shirok razmakh na vsenarodnoto sotsialistichesko sŭrevnovanie
Subtitle: rech pred sŭveshtanieto na ordenonostsite i pŭrventsite v Pernik, 23 dek. 1971 g.
Publisher: Partizdat
Published: 1972
Place of publication: Sofii︠a︡
Language: bul
Number of pages: 72