Elton, Charles S.  1900- <br/><br/>
The ecology of invasions by animals and plants / 
Charles S. Elton 
 - London :  Chapman & Hall,  1958 
 - 181 p. :  ill., maps ;  22 cm. 
<br/><br/><label>ISBN: </label>0412114305 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecology<br/>Biogeography