Sneath,H.A. and Sokal,R.R.  <br/><br/>
Numerical taxonomy; the principles and practice of numerical classification  (Book) 

 - San Francisco  W. H. Freeman  1973 
 - 573 p. 26 cm. 
<br/><br/><label>ISBN: </label>0716706970 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Numerical taxonomy
<br/><br/><label>Universal Decimal Class. No.: </label>528:168.2 SNE  / 17312