Das,N.G. <br/><br/>
Statistical method (vol.-1) 

 - 5th /   2013. 
 - Delhi:  McGraw hill education,  2013. 
 - 449p. 
<br/><br/><label>Subjects--Personal Names: </label><br/>Mathematics, statistics. 
<br/><br/><label>Dewey Class. No.: </label>001.422