Practical statistics 
By R.S.N. Pillai 
 - 2nd ed. 
 - New delhi:  S. Chand & company ltd.,  1987. 
 - vi,832p. 
<br/><br/><label>ISBN: </label>81-219-0044-1 
<br/><br/><label>Subjects--Index Terms: </label>Probabilities & applied mathematics Statistics 
<br/><br/><label>Dewey Class. No.: </label>519.5