00301nam a2200133Ia 45000030006000000080041000060400015000471000018000622450033000802500010001132600015001235460012001380050017001500STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aElton, L.R.B.  aIntroductory nuclear theorys  aFirst  bELBSc1959  aEnglish20220125170219.0