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Untitled
editThis article should include the historical information available here: http://www.actamath.com/Jwk_sxxb_en//EN/column/column126.shtml. 165.91.14.202 (talk) 20:09, 23 January 2012 (UTC)
MCQ
editSomeone needs to update the MCQ. Thanks. Steve Quinn (talk) 22:40, 10 February 2017 (UTC)