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Size of this preview: 457 × 479 pixels Full resolution (540 × 566 pixels, file size: 107 KB, MIME type: image/jpeg)
 
      
       
       
       
        
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         This is a file from the  Wikimedia Commons. The description on its  description page there is shown below.Commons is a freely licensed media file repository.  You can help. 
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       en:
        - Description: A composite of images showing the diminishing  en:Lake Chad from 1973 to 2001.
 - Info: The large image is a composite of photos taken with  en:Landsat-7. Images courtesy NASA GSFC Scientific Visualization Studio and Landsat 7 Project Science Office.
 - Source:  earth observatory  (file)
 - License: Public domain  
 
       de:
        - Beschreibung: Der  de:Tschadsee schrumpft langfristig. Das Bild zeigt den See im Jahr 1973, 1978, 1997 und 2001 aus der Erdumlaufbahn. Die offene Wasserfläche ist im Falschfarbeninfrarotbild blaugrün wiedergegeben.
 - Quelle: Adapted from NASA images at  http://earthobservatory.nasa.gov/Newsroom/NewImages/images.php3?img_id=4714 (aus der englischen Wikipedia)
 - Lizenzstatus: Public Domain
 
       
 License
       
        
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         This file is in the  public domain because it was created by  NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". ( NASA copyright policy page or  JPL Image Use Policy). 
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         Warnings:
           - Use of  NASA logos, insignia and emblems are restricted per US law  14 CFR 1221.
 - The NASA website hosts a large number of images from the  Soviet/ Russian space agency, and other non-American space agencies. These are not necessarily in the public domain.
 - Materials from the  Hubble Space Telescope may be copyrighted if they do not explicitly come from the  STScI.  
 - All materials created by the  SOHO probe are copyrighted and require permission for commercial non-educational use.  
 - Images featured on the  Astronomy Picture of the Day (APOD) web site may be copyrighted.  
  
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      File history
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        Date/Time | 
        Dimensions | 
        User | 
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        | current | 
         13:25, 22 June 2005 | 
        540×566 (107 KB) | 
        Frieda | 
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      File links
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