Redfield, Holland L. <br/><br/>
Instrument flying and radio navigation 

 - New York :   The Ronald Prees Company,   1944. 
 - p. 195 
<br/><br/><label>Subjects--Topical Terms: </label><br/>INSTRUMENTOS DE NAVEGACION<br/>SISTEMAS DE NAVEGACION<br/>RADIO<br/>GUIAS DE NAVEGACION
<br/><br/><label>Universal Decimal Class. No.: </label>629.7.05