International Mathematics Olympiad 2019
Tani duke shfaqur: Sllovakia - Pulla Poste - 2019 - International Mathematics Olympiad - 1 pulla.
2019
International Mathematics Olympiad
7. Qershor WM: Asnje Madhesia e Faqes : 50 Dizajni: Ingrid Zámečníková Performanca: 11½
![[International Mathematics Olympiad, Tipi ACK]](https://www.stampworld.com/media/catalogue/Slovakia/Postage-stamps/ACK-s.jpg)