Moscow State University lecturer, member of USSR Academy of Sciences Lev Pontryagin.
- Categories: Science & Technology
- Location: Moscow, Russia
- Event date: 01.04.1970
- Date published: 05.04.2005
- Author: Юрий Иванов
- Source: Sputnik
- Credit: Sputnik
- Original: Ж70-7113, 35 mm film
- Media: JPEG, 2049x3000px, 1.7Mb