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June 17, 2017
March 16, 2012
August 13, 2009
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January 9, 2009
April 13, 2008
January 18, 2008
He was the first African American Scientist!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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BethanyS
He was the first African American Scientist!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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SharonS
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