Helfrick, Albert D. <br/><br/>
Modern aviation electronics / 
Albert Helfrick. 
 - Englewood Cliffs, N.J. :  Prentice-Hall,  c1984. 
 - vii, 312 p. :  ill. ;  25 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0135877660 
<br/><br/><label>LCCN: </label>83017703  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Avionics.
<br/><br/><label>LC Class. No.: </label>TL695  / .H44 1984 
<br/><br/><label>Dewey Class. No.: </label>629.135/5