Scott Taggart, John. <br/><br/>
Thermionic tubes : 

 - 2nd ed. 
 - London :  Iliffe and Sons,  1924. 
 - xxiv, 470 p. :  ill. ;  22 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>9780267811595 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Thermionic Tubes<br/>Radio Telegraphy<br/>Wireless Communication
<br/><br/><label>Dewey Class. No.: </label>621.384  / SCO