00313nam a2200133Ia 45000030006000000080041000060400015000471000019000622450036000812500011001172600022001285460012001500050017001620STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aKennedy George  aElectronic communication sytems  aSecond  bMcgraw hillc1982  aEnglish20220125170213.0