Modern crystal and mechanical filters / 
by Desmond F. Sheahan and Robert A. Johnson. 
 - New York :  IEEE Press,  1977. 
 - vii, 453 p. : ill. 
<br/><br/> Includes bibliographies. 
<br/><br/><label>ISBN: </label>0879420960 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Crystal and mechanical filters.