Nagar , A.L. <br/><br/>
Basic statistics 

 - 2nd ed. 
 - Delhi  Oxford University Press  1997 
 - x p. + 424 
<br/><br/><label>ISBN: </label>0-19-561554-9 
<br/><br/><label>Dewey Class. No.: </label>519.5 N131B