The 11th Congress of the International Commission on High Dams, Madrid 1973
Now showing: Spain - Postage stamps - 1973 - The 11th Congress of the International Commission on High Dams, Madrid - 1 stamps.
1973
The 11th Congress of the International Commission on High Dams, Madrid
9. June WM: None Engraving: F.N.M.T. Perforation: 12¾ x 13¼
![[The 11th Congress of the International Commission on High Dams, Madrid, type CAF]](https://www.stampworld.com/media/catalogue/Spain/Postage-stamps/CAF-s.jpg)
