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

 - Edingburgh  Oliver & Boyd          1981 
 - 243p. Bib p. 227-35  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