Next century mathematics:  general mathematics grade 11/ 
Fernando B. Orines. 
 - Quezon City:  Phoenix,  2016. 
 - v, 52 pages:  illustrations:  25 cm. 
<br/><br/><label>ISBN: </label>9789710638895 
<br/><br/><label>LC Class. No.: </label>QA 39  / .OR69 2016