00301nam a2200121Ia 45000030006000000080041000060400015000471000016000622450052000782600020001305460012001500050017001620STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aKlein Felix  aElementary mathematics from advanced standpoint  bMacmillanc1932  aEnglish20220125170029.0