Schwartz, Linda <br/><br/>
The Big Book of Questions & Answers Save the Earth / 
Marsh, T.F. 
 - Lincolnwood, IL :  Publications International. Ltd,  1992. 
<br/><br/><label>ISBN: </label>1-56173-468-3 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Earth<br/>Plants<br/>Animals<br/>Water<br/>Land<br/>Air<br/>Energy