Statistics for secondary schools 
Nacianceno, Natividad T. 
 -  National Book Store, Inc.  1981 
 - 199 pages. 
<br/><br/>
<br/><br/><label>ISBN: </label>9-71080064-7 
<br/><br/><label>Dewey Class. No.: </label>GS 519.5 N11s 1981