World nature encyclopedia index / 
Raintree Publishers Ltd. 
 - Milwaukee, Wisconsin :  Raintree Publishers,  c1989. 
 - 55 p. 
<br/><br/> Index to World nature encyclopedia. 
<br/><br/><label>ISBN: </label>0817233245 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecology.<br/>Biotic communities.