Natural resource and environmental economics / 
Roger Perman ... [et al.]. 
 - 4th ed. 
 - Harlow, Essex ;    New York :  Pearson Addison Wesley,  2011. 
 - xxx, 712 p. :  ill. (some col.) ;  25 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>9780321417534 (pbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental economics.<br/>Natural resources -- Management.<br/>Sustainable development.