Izbrana bibliografii͡a︡, 1959-1979
Subtitle: 20 godini Nauchnoizsledovatelski institut po truda
By: Khristo Khristov, Tonka Kafedzhiĭska.
Publisher: [s.n.]
Published: 1979
Place of publication: Sofii͡a︡
Language: bul
Number of pages: 154