New standard encyclopedia. 

 - Chicago:  Standard Educational Corporation,  c1991. 
 - 20 volumes:  illustrations;  24 cm. 
<br/><br/><label>ISBN: </label>0873921968 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Encyclopedias and dictionaries.
<br/><br/><label>Dewey Class. No.: </label>DRef 031  / N42