Classification research <br/><br/>
Proc ... International study conference on classification research, 2, Elsinore, Denmark, 14-16, September 1964.   
ed. by Pauline Atherton 
 - Copenhagen  Munksgaared,  1965 
 - viii, 563p. 
<br/><br/><label>LCCN: </label>65-24483 
<br/><br/><label>Dewey Class. No.: </label>025.4072  / N65