Kent, Allen Ed. <br/><br/>
Encyclopedia of Library and Information science,Vol.55, Supplement-18 

 - New York  Marcel Dekker,INC.  1995 
 - 377p.  24 cm. 
<br/><br/><label>ISBN: </label>0824720555 
<br/><br/><label>Subjects--Uniform Titles: </label><br/>Encyclopedia - Library and Information science
<br/><br/><label>Dewey Class. No.: </label>020.3  / ENC