00293nam a2200121Ia 45000030006000000080041000060400015000471000026000622450035000882600019001235460012001420050017001540STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aSmith Heckstall, H.W.  aIntermediate electrical theory  bJ.M.Dentc1950  aEnglish20220125170204.0