Ashworth, William. <br/><br/>
The late, Great Lakes :  an environmental history / 
William Ashworth. 
 - New York :  Knopf,  1986. 
 - 274 p. :  maps. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>0394551516 
<br/><br/><label>LCCN: </label>85045915 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Water pollution--Environmental aspects--History.<br/>Lake ecology--History.
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Great Lakes--History.
<br/><br/><label>Dewey Class. No.: </label>363.7