New standard encyclopedia. 

 - Chicago :  Ferguson Pub.,  2001. 
 - 20 v. :  ill. (some col.), maps (some col.) ;  24 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>0873921054 (set) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Encyclopedias and dictionaries.
<br/><br/><label>Dewey Class. No.: </label>031  / NEW 2001