000 00252nam a2200097Ia 4500
008 220201s9999 xx 000 0 eng d
100 _aCUNNINGHAM (EDWARD P)
245 0 _aDIGITAL FILTERING : AN INTRODUCTION
260 _bHOUGHTON TORRONTO
942 _2ddc
999 _c96141
_d96141