Marcus, Abraham. <br/><br/>
Elements of radio / 
by Abraham Marcus and William Marcus. 
 - 6th ed. 
 - [S.l.] :  Prentice,  1973. 
 - 691 p. :  ill. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Radio.<br/>Radio--Receivers and reception.
<br/><br/><label>Dewey Class. No.: </label>621.3841