International Hydrological Decade, 1965-1974 1967
Viser nu Madagaskar - Post frimærker - 1967 - International Hydrological Decade, 1965-1974 - 1 frimærker.
Viser nu Madagaskar - Post frimærker - 1967 - International Hydrological Decade, 1965-1974 - 1 frimærker.
![[International Hydrological Decade, 1965-1974, type OU]](https://www.stampworld.com/media/catalogue/Madagascar/Postage-stamps/OU-s.jpg)
