00322nam a2200133Ia 45000030006000000080041000060400015000471000030000622450035000922500010001272600022001375460012001590050017001710STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aMorse, P.M.; Feshbach, H.  aMethods of theoretical physics  aFirst  bMcgraw hillc1953  aEnglish20220125170127.0