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October 1992Correction: ``Forty years of `unnatural' natural deduction and quantification: a history of first-order systems of natural deduction from Gentzen to Copi''
Irving H. Anellis "Correction: ``Forty years of `unnatural' natural deduction and quantification: a history of first-order systems of natural deduction from Gentzen to Copi''," Modern Logic, Mod. Log. 3(1), 98, (October 1992)
