Detwyler, Thomas R. <br/><br/>
Man's impact on environment / 
Thomas R. Detwyler. 
 - New York :  McGraw-Hill,  c1971. 
 - xiii, 731 p. :  ill., maps. ;  26 cm. 
 - McGraw-Hill series in geography. .
 - McGraw-Hill series in geography. .
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>0070165920 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Nature--Effect of human beings on.<br/>Pollution.