"Tivy, Joy" <br/><br/>
Human impact on the ecosystem/by Joy Tivy and Greg O'Hare 

 - Edinburgh  Oliver and Boyd  1981 
 - 243p 
<br/><br/><label>ISBN: </label>9780050032039 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental policy
<br/><br/><label>Dewey Class. No.: </label>574.5223 TIV