00346nam a22001217a 4500020000800000040001600008082001700024100002500041245007300066250001200139260003500151300003800186  qPB.  cFIZZA ISHAQ  a621.382bFRE  aFrenzel ,  Louis E.   aPrinciples of electronic communication systems /c Louis E. Frenzel.  a3rd ED.  b McGraw-Hill Education,c2008.  axiii, 637 p. :c10.8 X 8.5 inches