Stratford, Alan H.. <br/><br/>
Air Transport Economics in the Supersonic Era /  

 - Second Ed. /  
 - London :   Macmillan Press Ltd. ,   1985 
 - p505 :  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Economics
<br/><br/><label>Dewey Class. No.: </label>X43`N6  / K7S,L3