Kinsman, Robert G. <br/><br/>
Crystal filters  design,Manufacture,and application 

 - New York  John wiley  1987 
 - xiii,191p. 
<br/><br/><label>Subjects--Uniform Titles: </label><br/>Electric filters
<br/><br/><label>Dewey Class. No.: </label>621.381532  / K71C