Clifford, Harold Trevor  (1927- ). <br/><br/>
An introduction to numerical classification / 
H.T. Clifford, W. Stephenson. 
 - New York ;  San Francisco :  Academic Press,  1975. 
 - XII, 229s. :  il. ;  23 cm. 
<br/><br/>Bibliogr. s. 209-224. Indeks. 
<br/><br/><label>ISBN: </label>0121767507 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Taksonomia numeryczna.
<br/><br/><label>Universal Decimal Class. No.: </label>519.61/.64