V chelnite reditsi za izgrazhdane na razvito sotsialistichesko obshtestvo.
Contributors: Daskalov, Ivan; Ivanov, Veselin; Sukhachenski, Tsvetan
Publisher: Profizdat
Published: 1972
Place of publication: [Sofiia]
Language: bul
Number of pages: 564
Subjects: Labor unions -- Bulgaria -- Congresses