Title: Nauchno-prakticheska konferent͡sii͡a Mezhdunarodnoto nauchno-tekhnichesko sŭtrudnichestvo--resurs za intenzifikat͡sii͡a na nauchnoizsledovatelskata i inzhenerno-vnedritelska deĭnost v stolit͡sata
Subjects: Congresses, Engineering, Technological innovations