00354    a2200121   4500082001500000100002600015245006200041260003800103300002100141650002300162650002000185650002700205  a621.3bHUM  aHumpherys, De Verl S.  aThe analysis, design, and synthesis of electrical filters  aCliffsbPrentice-Hallc1970g1970  axi, 675p.c23cm.  aElectrical Filters  aApplied physics  aElectrical Engineering