Jones, Morgan <br/><br/>
Valve amplifiers / 
Morgan Jones 
 - 4th ed. 
 - Oxford :  Newnes,  2012 
 - xiii, 686 p. :  ill. ;  23 cm. 
<br/><br/> Previous ed.: 2005 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>9780080966403 (pbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Audio amplifiers<br/>Amplifiers, Vacuum-tube