00336nam a2200121Ia 4500008004100000020001800041028003300059082002200092100003000114245002500144260003900169365000600208191016s9999    xx            000 0 und d  a9788120312463  aDonated by President Office   223a621.38223 OPP  aOppenheim Willsky & Nawab 0aSignals And Systems   bNew.Jersey. : Prentice Hall,c1997  b0