000 00270nam a22001217a 4500
999 _c6326
_d6326
003 OSt
005 20210320113609.0
008 210320b ||||| |||| 00| 0 eng d
100 _aOPPENHEIM, V. ALAN
245 _aSIGNALS AND SYSTEMS
260 _bPEARSON
942 _2ddc
_cGE