Kent, Allen <br/><br/>
Encyclopedia of Library and Information Science, Vol.48, Supplement 11 

 - New York  Marcel Dekker, INC.  1991 
 - 380p.  24 cm. 
<br/><br/><label>ISBN: </label>0824720482 
<br/><br/><label>Dewey Class. No.: </label>020.3  / ENC