

Self-taught researcher Ivan Polzunov. Reproduction.
- Categories: Science & Technology, Arts, Culture & Entertainment
- Location: Moscow, Russia
- Event date: 01.04.1951
- Date published: 06.09.2009
- Author: RIA Novosti
- Credit: Sputnik
- Source: Sputnik
- Original: 35389, Glass
- Media: JPEG, 3544x4506px, 6.9Mb