000			00336nam a2200121 4500
245			_aIntroduction to sumbolic logic _cA.H. Basson and J.J. O'Connor
100			_aBasson, A.H.
710			_aO'Connor, D.J.
250			_a3rd ed.
260			_aLondon _bUniversity Tutorial Press _c1959
300			_aviii,175p.; 19cm.
082			_a511.3 _bBAS
999			_c13612 _d13612