Tekhnicheskii︠a︡t progres i rabotnata sila [v Bŭlgarii︠a︡
Subtitle: sot︠s︡ialno-ikonomicheski problemi]
By: I︠A︡ncho Georgiev
Publisher: BKP
Published: 1969
Place of publication: Sofii︠a︡
Language: bul
Number of pages: 246
Notes: Includes bibliographical references.