Bulgaria
Viser nå: Bulgaria - Postfrimerker (1879 - 2024) - 1 frimerker.
1981
The 25th Anniversary of the Joint Institute for Nuclear Research, Dubna
10. March VM: Ingen Perforering: 13¼ x 13
![[The 25th Anniversary of the Joint Institute for Nuclear Research, Dubna, type DBG]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Bulgaria/Postage-stamps/DBG-s.jpg)
