00315    a2200133   4500020001500000082001500015100002000030245003000050260003500080300002000115650001600135650001800151650001200169  a0387955879  a512.7bSTI  aStillwell, John  aElements of number theory  aNew YorkbSpringerc2003g2003  axii, 256pc24cm  aMATHEMATICS  aNUMBER THEORY  aALGEBRA