• 

  ALEXIS (P89-1B)

  http://space.skyrocket.de/doc_sdat/alexis.htm

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

• 

  Explorer: TERRIERS (STEDI 2)

  http://space.skyrocket.de/doc_sdat/explorer_terriers.htm

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

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