The 12th Congress of the international geodetical-geophysical Union 1960
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1960
The 12th Congress of the international geodetical-geophysical Union
26. July WM: None Design: Olavi Vepsäläinen Engraving: R.Achrén Perforation: 14
![[The 12th Congress of the international geodetical-geophysical Union, type KQ]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Finland/Postage-stamps/KQ-s.jpg)
![[The 12th Congress of the international geodetical-geophysical Union, type KR]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Finland/Postage-stamps/KR-s.jpg)
