• 

  PQ Series

  http://www.designation-systems.net/dusrm/app1/pq.html

  Keine Beschreibung vorhanden.

• 

  Echo 1, 1A

  http://www.skyrocket.de/space/doc_sdat/echo-1.htm

  Gunter's Space Page - Information on Launch vehicles, Satellites, Space Shuttle and Astronautics

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