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

 -  1939 
 - p.  cm. 
<br/><br/><label>Standard No.: </label>66289 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Correlation
<br/><br/><label>Dewey Class. No.: </label>B285, G91