Keywords: FirmaDeMorgan.jpg es Firma de Augustus De Morgan 1898-12-31 http //culturemath ens fr/histoire 20des 20maths/htm/Lemignot11/article2/la-percee-due-a-boole html Alain Le Mignot The Open Court Publishing 1898 other versions PD-old-70-1923 Augustus De Morgan Uploaded with UploadWizard |