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www.scientificamerican.com/article.cfm?id=a-solar-grand-plan

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Uploaded on March 20, 2011
Taken on March 19, 2011

resource_005

www.scientificamerican.com/article.cfm?id=a-solar-grand-plan

411 views
0 faves
0 comments
Uploaded on March 20, 2011
Taken on March 19, 2011
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