The Economics of biodiversity conservation 
edited by Stephen Polasky 
 - Aldershot (England)  Ashgate  2002 
 - 466 p.  25 cm 
 - International library of environmental economics and policy .
 - International library of environmental economics and policy .
<br/><br/><label>ISBN: </label>0754622053 
<br/><br/><label>Subjects--Index Terms: </label>Especies en peligro de extincion Situacion economica Conservacion de la naturaleza