00317nam a2200133Ia 4500008004100000041000800041082001200049100001400061245002500075260004400100300001000144650001000154999001900164230724s2001    xx            000 0 und d  aeng  a160/KEL  aJohn Kely  aThe Essence of Logic  aNew DelhibPrentice Hall of Indiac2001  a258p.  aLOGIC  c746085d746085