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Mar 18, 2015 at 12:16 answer added Maria Terrell timeline score: 11
Jan 1, 2015 at 19:13 vote accept Manfred Weis
Jan 1, 2015 at 18:40 answer added Carlo Beenakker timeline score: 15
Jan 1, 2015 at 17:23 history asked Manfred Weis CC BY-SA 3.0