Hydrological Decade UNESCO (1965-1974) 60 h — Czechoslovakia, 1974
Hydrological Decade UNESCO (1965-1974) (Czechoslovakia, 1974), face value 60 h, “International Hydrologic Decade” series. Photo, catalogue value, details…
- Series
- International Hydrologic Decade
- Issue date
- 1974
- Face value
- 60 h
- Colors
- Multicolor
- Print run
- 530,000