Weaver, David B ed. <br/><br/>
The encyclopedia of ecotourism 

 - Oxon  CABI publishing  2001 
 - XIV, 668 
 - NULL .
<br/><br/><label>ISBN: </label>0851993680 
<br/><br/><label>Dewey Class. No.: </label>338.4791  WEA;1  R