Library of Congress <br/><br/>
Subject headings used in the dictionary catalogs of the Library of Congress: January-December 1967 supplement to the 7th ed. 

 - Washington, D.C.   Library of Congress  1968 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Library Operations
<br/><br/><label>Dewey Class. No.: </label>025.33 LIB