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Mar 21, 2016 at 3:29 history edited PolyGeo
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Jul 21, 2011 at 16:27 vote accept Brad Nesom
Jul 21, 2011 at 15:41 answer added dkroy timeline score: 1
Jul 19, 2011 at 21:20 history edited whuber
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Jul 12, 2011 at 16:11 history asked Brad Nesom CC BY-SA 3.0