Dmitri Mendeleyev study.
- Categories: Lifestyle & Leisure, Science & Technology
- Location: Leningrad, Russia
- Event date: 01.09.1988
- Date published: 20.12.2004
- Author: Rudolf Kucherov
- Source: Sputnik
- Credit: Sputnik
- Original: 88-12953, 35 mm film
- Media: JPEG, 3000x2027px, 1.9Mb