Kent,Allen Ed. Lancour,Harold <br/><br/>
Encyclopedia of Library and Information Science;vol.21 

 - New York  Marcel Debber Inc.,  1968 
 - 505 p.  HB  24 cm. 
<br/><br/><label>Subjects--Uniform Titles: </label><br/>Library and information science<br/>encyclopedia
<br/><br/><label>Dewey Class. No.: </label>020.3  / ENC