General guidelines for using data on international air-passenger traffic for tourism analysis 

 - Madrid :  World Tourism Organization,  2002 
 - 74 p. 
<br/><br/><label>ISBN: </label>9284405467 
<br/><br/><label>Subjects--Topical Terms: </label><br/>TOURISM<br/>AIR TRAVEL<br/>AERONAUTICS, COMMERCIAL--PASSENGER TRAFFIC
<br/><br/><label>LC Class. No.: </label>G155 .A1  / G463