00441nam 2232573 450000100060000000300230000600500090002900800410003808200120007907200170009102000180010810000180012626000250014425000060016924500450017565000170022065000240023732573StarLibrary Marc Built20180430201711 ||||| |||||||||||amh  a621.382 aIntroduction a0-13-142492-0 aLeon W. Couch bPrentice Hall c2007 a4 aDigital and Analog Communication Systems aIntroduction aSignals And Spectra