The new encyclopaedia britannica  : guide to the britannica 

 - 15th ed. 
 - Chicago  ; William Benton Publishers  , 1981 
 - 780p.  , V.30 
<br/><br/><label>ISBN: </label> 6000 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Encyclopaedia<br/>Encyclopaedia Britannica
<br/><br/><label>Dewey Class. No.: </label>032  / ENC