Smith, Robert Leo. <br/><br/>
The ecology of man :  an ecosystem approach / 
Robert Leo Smith. 
 - New York  :  Harper & Row Publishers,  1972. 
 - xii, 436 p. : 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label>0060463368 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Human ecology.
<br/><br/><label>Dewey Class. No.: </label>304.2  / Ec