Encylopaedia Britannica 

 - USA :  William Benton,  1966 
 - 986 
 -  VOL-8 .
<br/><br/> Include Index 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Reference 
<br/><br/><label>Dewey Class. No.: </label>031  / ENC