USA Science & Engineering Festival -- President Obama Welcome

Uploader: Larry Bock

Original upload date: Thu, 21 Oct 2010 00:00:00 GMT

Archive date: Wed, 15 Dec 2021 20:25:48 GMT

Don't miss the largest celebration of science in the US! USA Science & Engineering Festival Expo on the National Mall October 23 & 24, 2010, 10:00am-5:30pm On the National Mall and surrounding a
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