00409nam a2200157 a 450000500170000002000150001708200180003210000230005024500240007325000120009726000350010930000190014449000470016370000210021070000200023120251203110731.0  a8178086883  a621.3822bOPP  aOppenheim, Alan V.  aSignals and Systems  a2nd ed.  aDelhibPearson Educationc1997  a977p.c24cm PB  aPearson Education Signal Processing series  aWillsky, Alan S.  aNawab, Hamid S.