Exhibition "Scientific and technical creativity of students and pupils of the Urals" in Sverdlovsk

October 1-28, 1977. USSR. Sverdlovsk. Student of the Ural Polytechnic Institute named after S. M. Kirov Lyudmila Petrenko during the demonstration of a machine for internal repair of blast furnaces, developed by students of the Sverdlovsk Polytechnic and Architectural Institutes, at the exhibition "Scientific and Technical Creativity of Pupils and Students of the Urals". The exact date of the photo is not established. Eduard Kotlyakov/TASS