Clapham, W. B. <br/><br/>
Human ecosystems /    
W.B. Clapham, Jr. 
 - New York :   Macmillan,   c1981. 
 - 419 p. ;    26 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>0023225106 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Human ecology.--------
<br/><br/><label>Dewey Class. No.: </label>304.2