Perman Roger <br/><br/>
Natural resource and environmental economics. 
Perman Roger; Ma Yue; McGilvray James 
 - London  Longman         1996 
 - xxiii,396p  cm. 
<br/><br/><label>Standard No.: </label>35463 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>X:(G:55), N6