00361nam a2200145Ia 4500008004100000020001500041041001200056082001100068100001800079245006900097250000800166260002500174300000800199650000800207221030s9999    xx            000 0 und d  a0070667551  aEnglish  a105.23  aL. E. Frenzel 0aPrinciples of Electronic Communication Systemscby L. E. Frenzel  a3rd  bTMHaNew Delhic2008  a885  aECE