Smith, David J. <br/><br/>
Air band radio handbook / 
David J. Smith. 
 - 3rd ed. 
 - Northamptonshire :   Patrick Stephens,  1990. 
 - 1763 p. :  ill. ;  21 cm. 
<br/><br/><label>ISBN: </label>1852603399 (pbk.)  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Air traffic control--Great Britain.
<br/><br/><label>Subjects--Index Terms: </label>Great Britain  Air traffic  Control