By Margalit Fox from NYT Science https://ift.tt/2Pmx0D0
Katherine Johnson Dies at 101; Mathematician Broke Barriers at NASA
By Margalit Fox from NYT Science https://ift.tt/2Pmx0D0
Monday 24 February 2020
By Margalit Fox from NYT Science https://ift.tt/2Pmx0D0
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