Perman,Roger <br/>
Natural Resource And Environmental Economics : 
Roger Perman , Yue Ma, James McGiluray 
 - 2nd ed 
 - London:  Longman  c1996 
 - xxiii,396 p :  21 cm. 
<br/><br/><label>ISBN: </label>0-582-25727-1 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Economics<br/>Economics
<br/><br/><label>Dewey Class. No.: </label>333.7PEN