The 7th Congress of the Federation of the Societies of Biochemistry and Molecular Biology (FEBS) 1971
Viser nå: Bulgaria - Postfrimerker - 1971 - The 7th Congress of the Federation of the Societies of Biochemistry and Molecular Biology (FEBS) - 1 frimerker.
1971
The 7th Congress of the Federation of the Societies of Biochemistry and Molecular Biology (FEBS)
20. September VM: Ingen Perforering: 12½
![[The 7th Congress of the Federation of the Societies of Biochemistry and Molecular Biology (FEBS), type BUO]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Bulgaria/Postage-stamps/BUO-s.jpg)
