Encyclopedia of knowledge / 
Grolier. 
 - Danbury, Conn. :  Grolier,  c1991. 
 - 415 p. : 20 v. : (V-12)  ill. (some col.), col. maps   25 cm. 
<br/><br/>Includes index. 
<br/><br/><label>ISBN: </label>0717253007 (set) 
<br/><br/><label>LCCN: </label>92121098 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Encyclopedias and dictionaries.
<br/><br/><label>LC Class. No.: </label>AE5  / .E478 1991 
<br/><br/><label>Dewey Class. No.: </label>31  / GRE 1991.