Library of Congress subject headings / 
prepared  by the Policy and Standards Division, Library Services. 
 - 32nd ed. 
 - Washington :  Library of Congress, Cataloguing Distribution Service  2010. 
 - 6 v. 
<br/><br/> 5 volumes accompanied by supplementary vocabularies volume. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Subject headings, Library of Congress.