Henney, Keith  <br/><br/>
Electron tubes in industry / 
Keith Henney and James D. Fahnestock 
 - 3rd ed. 
 - London :.   McGraw-Hill,   c 1952. 
 - 353 p. :   ill. ;  23 cm. 
<br/><br/>90  90 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electric, electronic, magnetic, communications, computer engineering; lighting
<br/><br/><label>Dewey Class. No.: </label>621.38 / H392e