Clifford, H. T. <br/><br/>
An introduction to numerical classification / 
H. T. Clifford and W. Stephenson 
 - New York :  Academic Press,  1975 
 - xii, 229 p. :  charts ;  24 cm. 
<br/><br/> Includes index 
<br/><br/>Bibliography: p. 209-224 
<br/><br/><label>ISBN: </label>0121767507 :  USD 19.50 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Numerical taxonomy<br/>Biology--classification
<br/><br/><label>Dewey Class. No.: </label>574.012