000 00240nam a2200109Ia 4500
008 200701s1998 xx 000 0 eng d
100 _aOPPENHEIM
245 0 _aSIGNALS AND SYSTEMS
260 _bS CHAND
_c1998
300 _a957
942 _2ddc
_cGE
999 _c781
_d781