Williams, Charles S.   1911- <br/><br/>
Designing digital filters /  [Books]. 
Charles S. Williams.  
 - Englewood Cliffs, N.J. :   Prentice-Hall,   1986. 
 - xvi, 349 p. :   ill. ;   25 cm. 
 - Prentice-Hall information and system sciences series .
<br/><br/> Includes index. 
<br/><br/>Bibliography: p. 341-344. 
<br/><br/><label>ISBN: </label>013201856X 
<br/><br/><label>LCCN: </label>85006453 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electric filters, Digital--Design and construction.