Orr, William I. <br/><br/>
Radio handbook / 
William Orr. 
 - 23rd ed. 
 - Carmel :  Howard W. & Sons,  1992. 
 - ix, 28 p. ;  26 cm. 
<br/><br/>Includes index. 
<br/><br/> Open access. 
<br/><br/><label>ISBN: </label>0672224240 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Radio--Handbooks, manuals, etc.<br/>Radio--Study and teaching.