Lecture in Novopolotsk technological university (Novopolotsk State university).
- Categories: Education
- Location: Novopolotsk, Belarus
- Event date: 01.09.1975
- Date published: 10.04.2010
- Author: Ettinger
- Source: Sputnik
- Credit: Sputnik
- Original: DC75-581, 6x6 slide
- Media: JPEG, 3544x3563px, 2.4Mb