00335nam a2200133Ia 45000030006000000080041000060400015000471000032000622450043000942500012001372600023001495460012001720050017001840STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aCourant, R. and Hilbert, D.  aMethods of Mathematical physics Vol. I  aSeventh  bIntersciencec1966  aEnglish20220125170123.0