Clapham, Wentworth B.,   1942- <br/><br/>
Natural ecosystems /  
W. B. Clapham, Jr. 
 - New York :   Macmillan,   c1973. 
 - viii, 248 p. :   il. 
<br/><br/><label>LCCN: </label>72077146  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecologia.
<br/><br/><label>Dewey Class. No.: </label>574.5