Tourism at world heritage sites:   challenges and opportunities 

 - Madrid :  World Tourism Organization (UNWTO),  2015 
 - 79 p. 
<br/><br/><label>ISBN: </label>9789284416592 9284416590 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Turismo<br/>Turismo patrimonial<br/>Areas del Patrimonio Mundial.
<br/><br/><label>Dewey Class. No.: </label>338.4791 I612t