The new book of knowledge / 
Grolier Inc. 
 - 21 volumes :  colored illustrations 
<br/><br/> 21 volumes 
<br/><br/>
<br/><br/><label>ISBN: </label>0-7172-0532-0 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Children's encyclopedias and dictionaries <br/> Encyclopedias
<br/><br/><label>Dewey Class. No.: </label>031