7th International Crystallography Congress, 1966, Moscow 6 Soviet kopek — USSR, 1966
7th International Crystallography Congress, 1966, Moscow (USSR, 1966), face value 6 Soviet kopek, “International Congresses, 1966” series. Photo, catalogue…
- Series
- International Congresses, 1966
- Issue date
- 1966
- Face value
- 6 Soviet kopek
- Colors
- Multicolor
- Print run
- 4,000,000