Encyclopaedia Britannica, Inc. <br/><br/>
The New Encyclopaedia Britannica Vol-20 

 - Chicago  Encyclopaedia Britannica, Inc.  1994 
 - 2-789 
<br/><br/><label>ISBN: </label>085229591x 
<br/><br/><label>Dewey Class. No.: </label>REF 031 ENC-B