00312nam a2200133Ia 4500008004100000041000800041082001700049100001500066245003000081260002100111300000800132365000800140700003000148230718s9999    xx            000 0 und d  aeng  a620.7'2bGAB  aGabel A.R.  aSignals And Linear System  c1980bJohn Wiley  a492  cRs.  aGabel A.R. & Roberts R.A.