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We don't have this page in archive: http://fr.encarta.msn.com/encnet/signin/signinmain.aspx?lnk=1&cred=8&tgt=http%3a%2f%2ffr.encarta.msn.com%2fmedia_461515527_761556057_-1_1%2fLeonhard_Euler.html

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What did happend :