Townsend, Colin R. <br/><br/>
Essentials of ecology 
/ by Colin R. Townsend, Michael Begon and John L. Harper 
 - 3rd ed. 
 - USA:   Blackwell Publishing ,   2008. 
 - xii, 510p. 
<br/><br/><label>ISBN: </label>9781405156585 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Communities<br/>Ecology<br/>Ecosystems<br/>Life science
<br/><br/><label>Dewey Class. No.: </label>577  / TOW/E