000 00266nam a2200109Ia 4500
999 _c10879
_d10879
020 _a0070704309
100 _aArthur B Williams
245 _aElectronic Filter Design Handbook
260 _c1981
_bMcGRAW HILL (ISE)
_aNew Delhi
300 _axiv+12-116+6
942 _cREF