Krebs, Charles J. <br/><br/>
Ecology :  the experimental analysis of distribution and abundance / 

 - Sixth edition. 
 - San Francisco :  Pearson Benjamin Cummings,  2009. 
 - xvi, 655 pages. 
<br/><br/><label>ISBN: </label>9780321507433 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Biogeography.<br/>Biology.<br/>Biotic communities.<br/>Ecology.<br/>Environmental sciences.<br/>Population biology.