00305nam a2200109Ia 4500008004100000082001700041100002000058245004500078250001200123260005000135300001000185150201s1991    xx            000 0 und d  a621.382bROD  aRoden, Martin S  aAnalog and digital communication systems  a3rd Ed.  bPHI Learning Private LimitedaNew Delhic1991  a505p.