maths 
One of the best online tutoring Web sites
(via www.transwebtutors.com)
Submitted by robbybecon on Wed, 07/02/2008 - 12:11. | Tags:
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A Prayer for Archimedes
(via www.sciencenews.org)
Submitted by admin on Sun, 10/07/2007 - 16:09. | Tags:
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