Magno, Jazzel B. <br/><br/>
Usage of cellphone affects the academic performance of selected fourth year high school in Our Lady of Perpetual Succor College school year 2011-2012 / 
Jazzel B. Magno, Paul Bryan O.Maniling. 
 - Marikina City :  2012 
 - 33 leaves ;   28 cm.    
<br/><br/><label>Subjects--Topical Terms: </label><br/>Research--SHS Thesis
<br/><br/><label>LC Class. No.: </label>TK 6564   / M198 2012