00327nam a2200133Ia 45000030006000000080041000060400015000471000030000622450036000922500011001282600025001395460012001640050017001760STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aMathews, J.; Walker, R.L.  aMathematical methods of physics  aSecond  bAddison Wesleyc1970  aEnglish20220125170127.0