Grolier encyclopedia of knowledge. 

 - Abridged version of the Academic American Encyclopedia. 
 - 20 volumes :   illustrations (some color) ;   25 cm. 
<br/><br/> Includes index, 
<br/><br/>v.1 to v.20. 
<br/><br/>  
<br/><br/><label>ISBN: </label>0717253724 (complete set). 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Encyclopedias and dictionaries.
<br/><br/><label>Dewey Class. No.: </label>031/G89