O'Neill, R. V. <br/><br/>
A hierarchical concept of ecosystems / 
R. V. O'Neill. 
 - New Jersey :  Princeton University Press,  1986. 
 - 253 p. :  il. ;  21 cm. 
 - Monographs in Population Biology   23. .
<br/><br/><br/>Ingles 
<br/><br/><label>ISBN: </label>0691084378  Normal 
<br/><br/><label>Dewey Class. No.: </label>577