00448nam a2200133Ia 4500100002300000942000700023654002600030245006800056260003900124300000800163546001200171999001700183952011400200  aWilliam Richard A   cBK  acommunication systems  aCommunication systems  Analysis  and  Design: A System Approach  bPrentice   HallaNew  Jerseyc1987  a653  aENGLISH  c26918d26918  001040708CRCaCRCEbCRCEd2023-03-17eglobal booksg440.82l0o p6674r2023-03-17v440.82w2023-03-17yBK