00461nam 2202549 45000010005000000030023000050050009000280080041000370820008000780720025000860200018001111000016001292600024001452500006001692450029001756500025002046500025002296500015002542549StarLibrary Marc Built20180420201711 ||||| |||||||||||amh  a621 aamplitude modulation a0-07-063496-3 aLloyd Temes bMC GRAW,HILL c1998 a6 aElectronic communication aamplitude modulation afrequency modulation atelevision