David  Weaver <br/><br/>
Ecotourism 

 - 2nd ed. 
 -   John Wiley & Sons  ©2008 
<br/><br/><label>ISBN: </label>9780470813041  131.8131.8 
<br/><br/><label>Dewey Class. No.: </label>338.4791/WEA