000 00368 a2200145 4500
082 _a160
_bJef/R
090 _c1508
_d1508
100 _aJeffrey,Richard C.
245 _aFormal logic
_cRichard C. Jeffrey
_bits scope and limits
260 _aNew Delhi
_bTata Mcgraw Hill
_c1980
300 _axii, 238 p.
_c21 cm.
650 _aLogic
650 _a Philosophy
942 _cBK
999 _c1412
_d1421