Bulgarien
Visar nu: Bulgarien - Postfrimärken (1879 - 2024) - 1 frimärken.
1981
The 25th Anniversary of the Joint Institute for Nuclear Research, Dubna
10. mars WM: Inga Perforering: 13¼ x 13
![[The 25th Anniversary of the Joint Institute for Nuclear Research, Dubna, Typ DBG]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Bulgaria/Postage-stamps/DBG-s.jpg)
