Norge
Visar nu: Norge - Postfrimärken (1855 - 2024) - 1 frimärken.
1964
The 100th anniversary of the publication of the mass action law by the professors C.M.Guldberg and P. Waage
11. mars WM: Inga Perforering: 13
![[The 100th anniversary of the publication of the mass action law by the professors C.M.Guldberg and P. Waage, Typ GK]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Norway/Postage-stamps/GK-s.jpg)
![[The 100th anniversary of the publication of the mass action law by the professors C.M.Guldberg and P. Waage, Typ GK1]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Norway/Postage-stamps/GK1-s.jpg)
