00313nam a2200133Ia 45000030006000000080041000060400015000471000033000622450024000952500010001192600021001295460012001500050017001620STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aHenney, K.; Richardson, G.A.  aPrinciples of radio  aSixth  bJohn Wileyc1952  aEnglish20220125170211.0