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Text File  |  1999-10-23  |  151b  |  13 lines
  1. The splitting of the F region 
  2.  
  3. The presence of ionized clouds in the E region
  4.  
  5. The ionization of the D region
  6.  
  7. The weather below the ionosphere
  8.  
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  10.  
  11. 2
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