Library of Congress classification : Bibliography and library science (z) / 
Library of Congress 
 - 5th ed 
 - Washigtion :  N.p.,  1980 
 - 354 p 
<br/><br/><label>ISBN: </label>0844403407 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Classification--books--library Science.<br/>Classfication, Library Of Congresses.
<br/><br/><label>Dewey Class. No.: </label>025.460  / L697L