00299pam a2200121 a 4500020002400000041000500024082001200029100002500041245006400066250001200130260002700142300000800169  a978-0-07-048398-9c  h  a621.382  aFrenzel L.E.eAuthor  aCommunication ElectronicscFrenzel L.E.hTextual Documents   a3rd Ed.  bTata McGraw Hillc2012  a532