SPANGENBERG, K.R. <br/><br/>
Vacuum tubes 
Karl R. Spangenberg 
 - New York  McGraw-Hill Book  1948 
 - xvii, 860 p.  ill. 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label> 39.00 
<br/><br/><label>Subjects--Topical Terms: </label><br/>VACUUM TUBES
<br/><br/><label>Dewey Class. No.: </label>PHY(E) 621.381512  / SKn48