Usman, Tohami Sakilan <br/><br/>
Factors affecting Grade Six pupils' academic performance in Mathematics in the five districts of Lebak and Kalamansig 
Tohami Sakilan Usman 
 - Cotabato City  Notre Dame University  2003. 
 - xxii, 143p. 
<br/><br/>Education 
<br/><br/><label>Subjects--Uniform Titles: </label><br/>Education
<br/><br/><label>LC Class. No.: </label>T-00028