Essential environmental science :   methods & techniques / 
edited by Simon Watts and Lyndsay Halliwell. 
 - New York :  Routledge,  1996. 
 - xxxii, 512 p. :  ill., maps ;  26 cm. 
<br/><br/> Includes index. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>0415132479 (pbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental sciences--Experiments--Methodology.<br/>Environmental sciences--Experiments--Technique.