National geographic Vol. 204, no.6 December 2003 The Future of Flying Faster,Farther, Smarter 

 - Washington, D.C.  National Geographic Society.  [date of publication not identified] 
 - v.  26cm 
<br/><br/> monthly 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geography -- Periodicals.