Austria
Prezentat acum: Austria - Timbre poştale (1850 - 2024) - 1 timbre.
1981
The 10th International Congress of Mathematics in Innsbruck
14. Septembrie WM: Niciunul Marimea foii: 50 Design: V. Wurnitsch Perforare: 14¼ x 13¾
![[The 10th International Congress of Mathematics in Innsbruck, Tip ATY]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Austria/Postage-stamps/ATY-s.jpg)
