Pi Day 2015: meet the man who invented π | Science | The Guardian

http://www.theguardian.com/science/alexs-adventures-in-numberland/2015/mar/14/pi-day-2015-william-jones-the-welshman-who-invented-pi

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First saved: 2015-Mar-15 (Sun)
Last checked: 2015-Oct-27 (Tue), response 200