published on: 2014-03-28 15:51:05
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illacerva: Bang bang. You shot me down. Bang bang
joelsr23.tumblr.com/post/80980784883/
joelsr23.tumblr.com/post/80980788568/
joelsr23.tumblr.com/post/80980792847/
hyrodium: The proof of Sum of Square Numbers!