Clapham W B <br/><br/>
Human Ecosystems 

 - New York       Macmillan          1981 
 - xii,419p.  cm. 
<br/><br/><label>Standard No.: </label>1065 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>Y7:(G:5), M1-;1