00468nam a22001097a 4500020002100000082002100021100002500042245002600067260004800093300003300141650018400174  a0030592461 (pbk)  a621.3815324bVAN  aValkenburg, Van M.E.  aAnalog filter design   aNew York bHolt Rinehart and Winston c1982  axi, 608 p.b: ill.c; 23 cm.  aElectric fitters aOperational amplifiers vFrequently transformations vMagnitude responses vOperational amplifier vTransfer functions vLowpass filters vDelay filters vFEAS