000 00290nam a2200121Ia 4500
008 250224s9999 xx 000 0 und d
020 _a273014293
082 _a621.381SED
100 _aSedra Adel
245 0 _aFilter theory and design
260 _bPitman Publishing
_c1978
942 _cBK
999 _c433831
_d433831