Grover, J. H. H. <br/><br/>
Aircraft communications systems / 
J. H. H. Grover 
 - London :  Heywood & Company Ltd.,  1958 [c1957] 
 - 127 p. :  ill. ;  22 cm. 
<br/><br/> Includes Index 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Airplanes--Radio equipment.
<br/><br/><label>Dewey Class. No.: </label>621.384191  / GRA 1958