Fennell, David  <br/><br/>
Ecotourism 
by David Fennell 
 - 3th ed. 
 - London  Routledge  2008 
 - 282 pages; 24 cm. 
<br/><br/> includes appendix, bibliography and index  
<br/><br/><label>ISBN: </label>978-0-415-42930-6 
<br/><br/><label>Dewey Class. No.: </label>338.4791/F36/c4/ 2008