00306nam a2200133Ia 45000030006000000080041000060400015000471000017000622450044000792500011001232600009001345460012001430050017001550STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aKoblitz Neal  aCourse in number theory and cyptography  aSecond  c1994  aEnglish20220125165931.0