Helfrick, Albert. , <br/><br/>
Modern aviation electronics :  Albert Helfrick. 

 - 2nd ed 
<br/><br/><label>ISBN: </label>013097692X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Avionics.
<br/><br/><label>LC Class. No.: </label>TL 695   / .44 1994