Henney, Keith. <br/><br/>
Electron tubes in industry / 
by K.Henney and J.D.Fahnestock. 
 - 3rd ed. 
 - New York :  McGraw-Hill,  c1952. 
 - x, 353 p. :  ill. ;  24 cm. 
<br/><br/> Includes index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electron tubes.
<br/><br/><label>Dewey Class. No.: </label>621.38151  / HEE 1952