00299nam a2200109Ia 4500008004100000041000800041082002500049100002000074245004700094260004000141300000800181211209s1989    xx            000 0 und d  aeng  a621.3822 N89 PRO/MAN  aPROAKIS, JOHN G  aINTRODUCTION TO DIGITAL SIGNAL PROCESSING   aNEW YORKbMACMILLAN PUBS. CO.c1989  a944