Daniels, Richard W. <br/><br/>
Approximation methods for electronic filter design with applications to passive, active and digital networks 

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 - New York  McGraw-Hill  1974 
 - xvii, 388p.   
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<br/><br/><label>Subjects--Index Terms: </label>Electronic filters  Filter design  Filters 
<br/><br/><label>Dewey Class. No.: </label>621.372.54