Wordt nu getoond: Angola - Postzegels (1970 - 1979) - 1 postzegels.
1971
The 5th Anniversary of the Regional Soil and Foundation Engineering Conference, Luanda
22. augustus WM: Geen Bladformaat: 50 Ontwerp: José de Moura Graveren: INCM Perforatie: 13½
![[The 5th Anniversary of the Regional Soil and Foundation Engineering Conference, Luanda, type KX]](https://www.stampworld.com/media/catalogue/Angola/Postage-stamps/KX-s.jpg)
