Encyclopaedia Britannica :  number prague / 
by Encyclopaedia Britannica. 
 - 15th ed. 
 - Chicago :  Encyclopaedia Britannica,  1994. 
 - 1080p. 
<br/><br/> Vol 25 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Encylopaedia.
<br/><br/><label>Dewey Class. No.: </label>032  / BRI.E.25