00287nam a2200121Ia 45000030006000000080041000060400015000471000018000622450047000802600009001275460012001360050017001480STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aLowenberg, E.  aTheory and problems of electronic circuits  c1967  aEnglish20220125170208.0