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Jul 21, 2013 at 22:41 vote accept Francisco Presencia
Jan 25, 2013 at 7:18 answer added John Rennie timeline score: 4
Jan 25, 2013 at 4:03 history tweeted twitter.com/#!/StackPhysics/status/294656753155571713
Jan 25, 2013 at 1:56 history edited Qmechanic CC BY-SA 3.0
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Jan 25, 2013 at 1:54 history asked Francisco Presencia CC BY-SA 3.0