Markus, Abraham <br/><br/>
Elements of radio / 
Abraham Markus, William Markus ; Ed. by Ralph E. Horton. 
 - complete ed. 
 - New York :  Prentice-Hall,  1943. 
 - xiii, 699 p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Engineering