000			00572nam a2200181 a 4500
005			20240602101816.0
008			040401s19uu xx 00 eng d
100			_aDel Grande, J. J.
245			_aAn introduction to the nature of proof / _cJ.J. Del Grande, J.C. Egsgard, H.A. Mulligan ; [edited by] A.J. Coleman.
260			_aToronto : _bGage, _cc1967.
300			_aviii, 59 p. : ill.
650			_aProof theory.
650			_aLogic, Symbolic and mathematical.
700			_aEgsgard, J. C.
700			_aMulligan, H. A.
700			_aColeman, A. J.
942			_2ddc
999			_c48434 _d48434