Chelnii͡a︡t opit sot͡s︡ialisticheskoto sŭrevnovanie
Subtitle: sbornik ot statii
By: [redakt͡s︡ionna kolegii͡a︡ Berta Kalaora (otg. red.) ... et al.].
Contributors: Kalaora, Berta.
Publisher: Nauchnoizsledovatelski in-t po profsŭi͡u︡zni problemi "Georgi Dimitrov" pri T͡S︡S na BPS
Published: 1980
Place of publication: Sofii͡a︡
Language: bul
Number of pages: 219