Basic Statistics 
De Belen, Rustico T. 
 -  Jobal Publishing House.  2019 
 - iv, 152 pages 
<br/><br/>
<br/><br/><label>ISBN: </label>978-9-71966708-7 
<br/><br/><label>Dewey Class. No.: </label>F 519.5 D2865 2019