New encyclopedia Britannica vol 20  Micropedia 

 - Chicago  Encyclopaedia Britannica lnc.  1911 
 - 847  HB 
<br/><br/><label>ISBN: </label>0-85229-423-9 
<br/><br/><label>Subjects--Facted Index Terms: </label><br/>
<br/><br/><label>Dewey Class. No.: </label>R032