Usŭvŭrshenstvuvane na deĭnostta po sot͡s︡ialnoto razvitie na trudovite kolektivi i kulturata
By: [avtorski kolektiv, nauchen rŭkovoditel D. Dikov ... et al. ; redaktor Siĭka Khristova, glaven redaktor Dimitŭr Gradev].
Contributors: Dikov, D.; Khristova, Siĭka.; Gradev, Dimitŭr.; Bulgaria. Komitet za kultura.
Publisher: Kom-t za kultura
Published: 1982
Place of publication: Sofii͡a︡
Language: bul
Number of pages: 243
Subjects: Working class -- Bulgaria.; Popular culture -- Bulgaria.
Notes: Cover title.