00297nam a2200121Ia 45000030006000000080041000060400015000471000019000622450056000812600009001375460012001460050017001580STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aCunnigham John  aComplex variables methods in science and technology  c1965  aEnglish20220125170005.0