Opitŭt na sot͡s︡ialisticheskite strani v razvitieto na tekhnicheskoto tvorchestvo
By: Elena Grigorova.
Publisher: T͡S︡entr. sŭvet po organizat͡s︡ii͡a︡ na tekhnicheskoto tvorchestvo
Published: 1984
Place of publication: Sofii͡a︡
Language: bul
Number of pages: 51
Subjects: Technological innovations -- Bulgaria.
Notes: Bibliography: p. 47-51.