000 00331 a2200145 4500
020 _a8120311906
082 _a160
_bKEL
090 _c4569
_d5846
100 _aKelly, John J.
245 _aThe essence of logic
260 _aNew Delhi
_bPrentice- Hall
_c1997
_g1997
300 _axiv, 256p.
_c22cm.
650 _aLOGIC
942 _cL
999 _c33499
_d33499