Library of Congress  Classification Division <br/><br/>
Classification :  Class Z : Bibliography and Library Science / 
Library of Congress. 
 - 3rd ed. 
 - Washington :  Govt. print. off,  1927. 
 - 153 p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Classification--Books--Bibliography<br/>Classification--Books--Archives