00477cam a22001692  4500001001100000005001700011008004100028020001500069040001500084100003400099245007200133250001300205260003400218300001700252650003500269852000300304000002116020151217152227.0120201s         xx           000 0 eng d  a0073107042  aKABUcKABU1 aFrenzel, Louis E.@000017014510aPrinciples of electronic communication systems /cLouis E. Frenzel.  a3rd  ed.  aBoston :bMcGraw-Hill,c2008.  axiii, 930 p. 0aTelecommunication.@00001563211