00305nam a22001337a 4500020001500000040000900015082001300024100001700037110003000054245001300084250002000097260004100117650001300158  a0471381578  cNUST  a515bANT  aHoward Anton  aIrl Bivens, Stephen Davis  aCalculus  aSeventh Edition  aNew York:bJohn Wiley & Sons,c2002.  2Calculus