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  • curprev 22:1422:14, 27 January 2016 GrahamHardy talk contribs 470 bytes +470 {{Non-free use rationale |Article = How to Solve It |Description = 1st edition |Source = http://antiques.gift/how-to-solve-it-a-system-of-thinking-which-can-help-you-solve-any-problem_3453500.html |Portion = fro...