Tschuprow, A. A. <br/><br/>
Principles of the mathematical theory of correlation 

 - New York :  Nordeman,  1939 
 - 194 p. 
<br/><br/><label>LCCN: </label>54650 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Correlaciones (Estadística)
<br/><br/><label>Dewey Class. No.: </label>311.25  / T8