The encyclopedia of environmental studies 
Edited by Willaim Ashworth 
 - New Delhi   Viva Books  2006 
 - vii, 600p. 
<br/><br/> HB 
<br/><br/><br/>Eng 
<br/><br/><label>ISBN: </label>8130902362 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental Science-Encyclopedias