Essential environmental science :  methods & techniques / 
edited by Simon Watts, Lyndsay Halliwell. 
 - New York :  Routledge,  1996. 
 - xxxii, 512 p. :  ill. ;  25 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>0415132460 (cloth) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental sciences
<br/><br/><label>Dewey Class. No.: </label>333.7   / ESS 1996