Smith R L <br/><br/>
Ecology of man :Ecosystem 

 -  1976 
 - p.  cm. 
<br/><br/><label>Standard No.: </label>1066 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>Y7:(G:5), L6