Watts, Simon <br/><br/>
Essential environmental science : methods & techniques 
/Edited by Simon Watts and Lyndsay Halliwell 
 - London  Routledge  1996 
 - xxxii,512p. 
<br/><br/><label>ISBN: </label>0-415-13247-9 
<br/><br/><label>Dewey Class. No.: </label>628  / WAT/E