International Mathematics Congress 1966
Now showing: USSR - Postage stamps - 1966 - International Mathematics Congress - 1 stamps.
1966
International Mathematics Congress
20. July WM: None Sheetsize: 50 Design: V. Pimenov Perforation: 11½
![[International Mathematics Congress, type DFQ]](https://www.stampworld.com/media/catalogue/USSR/Postage-stamps/DFQ-s.jpg)