00305nam a2200121Ia 4500008004100000040001700041041001200058082001500070100002000085245003100105260002900136300001800165230917s9999||||xx |||||||||||||| ||und||  e113709aMAIN  aEnglish  a512.7 S54E  aStillwell, John 0aElemenets of number theory  aNew YorkbSpringerc2003  axii p. ; 254p