00293nam a2200121Ia 45000030006000000080041000060400015000471000030000622450041000922600009001335460012001420050017001540STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aHutchinson William Robert  aWireless its principles and practice  c1945  aEnglish20220125170112.0