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https://archive.org/details/disquisitionesa00gaus Disquisitiones arithmeticae : Gauss, Carl Friedrich, 1777-1855 : Free Download, Borrow, and... XVIII, 668, [10] p. ; 21 cm free download gauss carl friedrich https://la.wikisource.org/wiki/Specialis:Nexus_ad_paginam/Disquisitiones_arithmeticae/Additamenta Paginae quae ad "Disquisitiones arithmeticae/Additamenta" nectuntur - Wikisource quae ad wikisource