The 20th International Congress of Pure and Applied Chemistry 1965
Now showing: USSR - Postage stamps - 1965 - The 20th International Congress of Pure and Applied Chemistry - 1 stamps.
1965
The 20th International Congress of Pure and Applied Chemistry
15. June WM: None Sheetsize: 25 Design: I. Levin Perforation: 11½
![[The 20th International Congress of Pure and Applied Chemistry, type CZF]](https://www.stampworld.com/media/catalogue/USSR/Postage-stamps/CZF-s.jpg)
