Ecological basis of conservation  Heterogeneity, Ecosystems,and Biodiversity 
ed. by S T A Pickett, etc. 
 - New York  Chapman & Hall  1997 
 - xxii, 466p. 
<br/><br/><label>ISBN: </label>0412098512 
<br/><br/><label>Dewey Class. No.: </label>333.9516  / N972