Hussen, Ahmed M. <br/><br/>
Principles of environmental economics and sustainability :  an integrated economic and ecological approach / 
Ahmed Hussen. 
 - 3rd ed. 
 - New York :  Routledge,  2012. 
 - xxii, 417 p. :  ill. ;  25 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>9780415676908 (hardback)  TZS 41,000/= 9780415676915 (pbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental economics.<br/>Ecology.<br/>Environmental policy.
<br/><br/><label>Dewey Class. No.: </label>333.7 HUS