000 00293nam a2200121Ia 4500
008 211209s1976 xx 000 0 und d
041 _aeng
082 _a621.381 532 N76 HUE
100 _aHUELSMAN L P
245 _aACTIVE RC-FILTERS THEORY AND APPLICATIONS
260 _c1976
300 _a717
999 _c13852
_d13852