Kahn, James R. <br/><br/>
The economic approach to environmental and natural resources / 
James R. Kahn 
 - 3 
 - Mason, Ohio :  Thomson,  2005       
 - xviii, 638 p. 
<br/><br/><label>ISBN: </label>0030314542 
<br/><br/><label>LC Class. No.: </label>HC 79 K12e 2005