00317nam a2200133Ia 45000030006000000080041000060400015000471000036000622450036000982500011001342600009001455460012001540050017001660STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aRatcliffe, J.A.; Appleton, E.V.  aPhysical principles of wireless  aSecond  c1931  aEnglish20220125170112.0