Perman Roger, and others <br/><br/>
Natural resource and environmental economics 
Perman Roger, and others 
 - 2 
 - London  Longman            1999 
 - xxvi, 564p  cm. 
<br/><br/><label>ISBN: </label>0 58236876 6 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Economics<br/>Natural Resources
<br/><br/><label>Dewey Class. No.: </label>X:271:(G:55), N6;N9/TD3