00297nam a2200121Ia 4500008004100000100002300041245003700064250000600101260001700107260000900124300000800133650003400141221231s9999    xx            000 0 und d  aLee, William  C Y 0aMobile Communication Engineering  a2  bMc Graw Hill  c1998  a689  aElectronics and Communication