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

 - New York  MacMillan U S A        1981 
 - xii,419p.  cm. 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Modern - Geography
<br/><br/><label>Dewey Class. No.: </label>U:(G:5), M1