Examination of Van Allen Zone magnetosphere

80 Mongolian möngö 1977

Монголия

Airmail

Intercosmos Program 11 Years

Assembly Of A Rocket 29 руб	Launching of Intercosmos 3. 5 руб	Marine Observatory Gagarin. 5 руб	Satellite observation of lunar eclipse.
Observatory with multiple antenna system	Examination of Van Allen Zone magnetosphere	Meteorological earth satellite 74 руб