Katz Cooper, Sharon. <br/><br/>
The Great Lakes / 
Sharon Katz. 
 - New York :  Benchmark Books,  1999. 
 - p. cm. 
 - Ecosystems of North America .
<br/><br/>Includes bibliographical references and index. 
<br/><br/> Describes the formation of the Great Lakes, the varied lifeforms that are part of this ecosystem, the interactions among the plants and animals that live there, and threats to this environment. 
<br/><br/><label>ISBN: </label>0761408983 
<br/><br/><label>LCCN: </label>97032693 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecology--Great Lakes (North America)--Juvenile literature.<br/>Ecology--Great Lakes (North America)<br/>Freshwater ecology.
<br/><br/><label>LC Class. No.: </label>JUV QH 105.5 .G7  / K38 1999