Soviet postal stamps. Sofia Kovalevskayav, outstanding Russian mathematician. Reproduction.
- Categories: Arts, Culture & Entertainment
- Location: Moscow, Russia
- Event date: 01.02.1956
- Date published: 16.11.2009
- Author: RIA Novosti
- Source: Sputnik
- Credit: Sputnik
- Original: 08404, Glass
- Media: JPEG, 3542x4710px, 5.4Mb