Tivy, Joy <br/><br/>
Human impact on the ecosystem 

 - Edinburgh  Oliver and Boyd  1981 
 - 243p. 
<br/><br/><label>ISBN: </label>
<br/><br/><label>Subjects--Topical Terms: </label><br/>Man - Influence on nature
<br/><br/><label>Dewey Class. No.: </label>577.27 TIV