Margalef, Ramón <br/><br/>
Perspectives in ecological theory /  
Ramón Margalef 
 - Chicago :   University of Chicago Press,   c1968. 
 - viii, 111 p. :   il. 
 - Chicago series in biology .
<br/><br/><label>LCCN: </label>68027291  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecologia.
<br/><br/><label>Dewey Class. No.: </label>574.5