I'm sure a lot of you know this site, but for those who don't, this site is one of the best free reference sites around, has pretty much everything.
http://wikipedia.org/
(The wikibooks section is pretty good for students)
http://wikimediafoundation.org/ has some of the other stuff they do
http://wikipedia.org/
(The wikibooks section is pretty good for students)
http://wikimediafoundation.org/ has some of the other stuff they do
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