00281pam a2200109 a 4500020000500000041000800005082001500013100002300028245007600051260003300127300001100160  c  aeng  a537.5bFRE  aFrenzel, Kouis E .  aCommunication Electronics Principles & Applications hTextual Documents  aNew DelhibMcGraw Hillc2017  a532 p.