20 godini po putya na sotsializma
Subtitle: tsifri i fakti
By: Redaktory: Stefan Stanchev i Petko Nikolov
Publisher: Otdel Propaganda i Agitatsiya na Tsk na BKP
Published: 1964
Place of publication: Sofiya?
Language: bul
Number of pages: 102
Notes: At head of title: Naruchnik na Agitatora.