Pencils Down: Scantron Inventor Michael Sokolski Has Died | Mental Floss - discu.eu

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Michael Sokolski, inventor of the Scantron test, has died http://www.mentalfloss.com/blogs/archives/132002 8 comments 1/7/2012 technology

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Pencil - Wikipedia https://en.wikipedia.org/wiki/Pencil 7 comments

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