Ecological census techniques :  a handbook / 
edited by William J. Sutherland. 
 - Cambridge :  Cambridge University Press,  1996. 
 - xv, 336 p. :  ill. ;  21 cm. 
<br/><br/> Includes index. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>0521478154 (pbk. ) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecological surveys--Methodology.<br/>Ecology<br/>Research.