The New Encyclopaedia Britannica. 

 - 15th ed. 
 - Chicago :  Encyclopaedia Britannica,  1974. 
 - 30 v. : 
<br/><br/> ----Includes bibliographies. 
<br/><br/><label>ISBN: </label>0852293399 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Encyclopedias and dictionaries.-------
<br/><br/><label>Dewey Class. No.: </label>031  / Ne,15