Guide to the library of congress classification 

 - 2nd 
 - Littleton  Libraries Unlimited Inc.        1971 
 - 335p.  cm. 
<br/><br/><label>Standard No.: </label>33840 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>LIBRARY SCIENCE
<br/><br/><label>Dewey Class. No.: </label>2:51N, L1