Encyclopedia of library and information science - V.58   
ed. by Allen kent 
 - New York  Marcel Dekker  1996 
 - vi, 352p. 
<br/><br/> Supplement 21 
<br/><br/><label>ISBN: </label>082472058X 
<br/><br/><label>Dewey Class. No.: </label>020.3  / N68.58 "R"