Tivy, Joy. <br/><br/>
Human impact on the ecosystem / 
Joy Tivy, Greg O'Hare ; maps and diagrams drawn by Ann Rooke and Andy Skinner. 
 - Edinburgh ;   New York :  Oliver & Boyd,  c1982. 
 - 243 p., [4] p. of plates :  ill. ;  24 cm. 
 - Conceptual frameworks in geography .
<br/><br/>Includes bibliographies and index. 
<br/><br/><label>ISBN: </label>0050034243 0050032038 (pbk.) 
<br/><br/><label>LCCN: </label>81-011199 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Nature--Effect of human beings on.<br/>Human ecology.
<br/><br/><label>Dewey Class. No.: </label>304.2