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            This is a file from the  Wikimedia Commons. Information from its  description page there is shown below.  Commons is a freely licensed media file repository.  You can help. 
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           | Description | 
           
             English: Diagram was created on 2005 May 05 by the uploader (Mrnatural) for a Wikipedia article. 
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           | Date | 
           16 May 2005 (original upload date) | 
          
          
           | Source | 
           Transferred from  en.wikipedia; transfer was stated to be made by  User:Hejsa. | 
          
          
           | Author | 
           Original uploader was  Mrnatural at  en.wikipedia | 
          
          
           Permission ( Reusing this file) | 
           
             GFDL-WITH-DISCLAIMERS; Released under the  GNU Free Documentation License. 
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        -- 90.198.254.216 19:14, 30 September 2012 (UTC)==  Licensing ==
        
         
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          This technology image could be recreated using  vector graphics as an  SVG file. This has several advantages; see  Commons:Media for cleanup for more information. If an SVG form of this image is already available, please upload it. After uploading an SVG, replace this template with {{ vector version available|new image name.svg}}. | 
         
        
        
         
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          Permission is granted to copy, distribute and/or modify this document under the terms of the  GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts.  Subject to  disclaimers.www.gnu.org/copyleft/fdl.htmlGFDLGNU Free Documentation Licensetruetrue 
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        Hheheudbfurjej dhdksksi
        
       File usage
       
        The following pages on Schools Wikipedia link to this image (list may be incomplete):
        
        
       
      Schools Wikipedia was created by children's charity SOS Children's Villages. SOS Children's Villages helps those who have nothing and no one, giving them back the famly they have lost and bringing them the very best opportunities for a happy, healthy future. Will you help another child today?