000 00287nam a2200121Ia 4500
008 190711s9999 xx 000 0 und d
082 _a621.381532 C518
100 _aCHEN,C
245 0 _aACTIVE FILTER DESIGN
260 _aNEW JERSEY
_bHAYDEN
_c1982
300 _a23X15
942 _cBK
_2DDC
999 _c20724
_d20724