Earth's ecosystems / 
authors : Mary Atwater ...[et al.]. 
 - New York :  Macmillan / McGraw-Hill,  c1993. 
 - 110 p. : col. ill. 
 - Macmillan / McGraw-Hill science .
<br/><br/> Includes glossary and index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecology--Juvenile literature<br/>Biotic communities--Juvenile literature