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<p>
<a  href="http://tojde.anadolu.edu.tr/tojde18/articles/article10.htm">Understanding PISA</a><br/>
Refereed Journal Article. 
Mar 31, 2005.  
<em>Turkish Online Journal of Distance Education</em>, Volume 6 Number 2 Online,  [<a  href="http://tojde.anadolu.edu.tr/tojde18/articles/article10.htm">Link</a>] 
[<a  href="http://www.downes.ca/post/17">Full Text</a>]
</p>Force:yes