000 00256nam a22001097a 4500
020 _a9780415023184
082 _a160
_bSYB.P
100 _aSYBIL WOLFRAM
245 _aPHILOSOPHICAL LOGIC
_bAN INTRODUCTION
260 _aLONDON
_RROUTLEDGE
_c1989
942 _cBK
999 _c473624
_d473624