00385nam a2200145Ia 4500008004100000020001800041041000800059082001400067100001700081245005500098250001100153260005800164300000800222365000900230231011s9999    xx            000 0 und d  a9780390000000  aeng  a512.7/KOB  aNeal Koblitz  aA course in number theory and cryptography 2nd Ed.  a2nd Ed  aNew YorkbSpringer Science + business Media LLCc1994  a235  b4590