Encyclopedia of questions and answers / 

 - 288 pages :  color illustrations 
<br/><br/><label>ISBN: </label>0753708973 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science--Miscellanea<br/>Science--Encyclopedia, Juvenile<br/>Science--Miscellanea--Juvenile literature<br/>Questions and answers
<br/><br/><label>Dewey Class. No.: </label>503