Sal Khan, Monterey Institute for Technology and Education
Duplicate Videos that should never been imported, but now that they are here they need to stay as other things might reference them. Source: Khan Academy (www.khanacademy.org), used under the Creative Commons Attribution-NonCommercial-ShareAlike (CC BY-NC-SA) license. All Khan Academy content is available for free at www.khanacademy.org. Khan Academy does not endorse the World Public Library.
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