URSS
Prezentat acum: URSS - Timbre poştale (1923 - 1991) - 1 timbre.
1969
The 3rd International Congress of Protozoologists
10. Iunie WM: Niciunul Marimea foii: 50 Design: B. Trifonov Perforare: 11½
![[The 3rd International Congress of Protozoologists, Tip DUL]](https://swmedia-4cd6.kxcdn.com/media/catalogue/USSR/Postage-stamps/DUL-s.jpg)
