Helliwell, Robert Arthur  <br/><br/>
Electronic and radio engineering 
Robert Arthur Helliwell and Frederick Emmons Terman 
 -  McGraw Hill  1955 
 - 1078p. 
<br/><br/><label>ISBN: </label>70635102 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Radio Engineering
<br/><br/><label>Universal Decimal Class. No.: </label>621.38/.396  / TER