Tekhnichesko tvorchestvo.
Contributors: T͡S︡entŭr za uchenichesko tekhnichesko i nauchno tvorchestvo--Stara Zagora.
Publisher: T͡S︡entŭr za uchenichesko tekhn. i nauch. tvorchestvo--Stara Zagora
Published: 1989
Place of publication: Stara Zagora
Language: bul
Number of pages: 64
Subjects: Technological innovations -- Bulgaria.; Technology -- Social aspects -- Bulgaria.