International Year of the Periodic Table 2019
Ditunjukkan sekarang: Bulgaria - Setem-setem bayaran pos - 2019 - International Year of the Periodic Table - 1 Setem-setem.
2019
International Year of the Periodic Table
24. June WM: Tiada Saiz Helaian: 40 Corak: Svetlin Balezdrov Perforasi: 13
![[International Year of the Periodic Table, jenis HGE]](https://www.stampworld.com/media/catalogue/Bulgaria/Postage-stamps/HGE-s.jpg)
