Nath, Som <br/><br/>
Encyclopaedic dictionary of statistics, Vol.2  N - Z 

 - New Delhi  Sarup  2000 
 - [6],pp 251-443  Illustration 
<br/><br/><label>ISBN: </label>8176251224 
<br/><br/><label>Subjects--Topical Terms: </label><br/>MATHEMATICS
<br/><br/><label>Dewey Class. No.: </label>519.503  / NAT