ROGER PERMAN <br/><br/>
NATURAL RESOURCE AND ENVIRONMENTAL ECONOMICS 

 - 2ND 
 - HARLOW  FINANCIAL TIMES PRENTICE HALL  1999 
<br/><br/><label>ISBN: </label>0-582-36876-6 
<br/><br/><label>Dewey Class. No.: </label>333.7  / 4