Helfrick, Albert D. <br/><br/>
Modern aviation electronics / 
Albert Helfrick. 
 - Englewood Cliffs, N.J :  Prentice-Hall,  c1984. 
 - vii, 312 p.  ill 
<br/><br/>
<br/><br/><label>ISBN: </label>0135877660 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Avionics.