Encyclopedia of ecology  
/ edited by Sven Erik Jorgensen, associate editor-in-chief Brian Fath. 
 - Amsterdam :  Elsevier,   2008. 
 - 4 v. :   ill. (some col.), maps ;   29 cm. 
<br/><br/>v. 4. P-S 
<br/><br/><label>ISBN: </label>9780444520333 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecology --Encyclopedias.
<br/><br/><label>Dewey Class. No.: </label>577.03 JOR