Dixon, John A. & Paul B. Sherman <br/><br/>
Economics of Protected Areas: New looks at benefits and costs 

 - London  Earthscan  1990 
 - 234p. 
<br/><br/><label>ISBN: </label>1853830976 
<br/><br/><label>LC Class. No.: </label>QH 77  / .D59 1990