000 00296nam a2200133Ia 4500
008 241124s9999 xx 000 0 und d
100 _aChen, Wai-kai
245 0 _aPassive & Active Filters: Theory & Implementations
250 _a1
260 _b-
260 _c0
300 _a504
942 _cBK
999 _c5530
_d5530