Babani, B.B.  <br/><br/>
International radio tube encyclopaedia  (Book) 

 - 3rd ed. 
 - Hackensack, N.J.  Wehman Bros  1958 
 - various pagings  26 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electron tubes
<br/><br/><label>Universal Decimal Class. No.: </label>621.387 (038) BAB  / 10628