Viser nå: Angola - Postfrimerker (1870 - 2019) - 1 frimerker.
1971
The 5th Anniversary of the Regional Soil and Foundation Engineering Conference, Luanda
22. August VM: Ingen Arkstørrelse: 50 Design: José de Moura Gravering: INCM Perforering: 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)
