Pre-calculus:  K to 12 basic education curriculum: Senior High School - specialization subject/ 
Felipe M. Sarmiento, Wilfredo N. De Castro 
 - Manila:   Unlimited Books,   2017. 
 - viii, 225 pages:  illustrations;  26 cm. 
<br/><br/> Includes bibliographical references. 
<br/><br/><label>ISBN: </label>9789719654568 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Precalculus
<br/><br/><label>LC Class. No.: </label>SH Fil QA 305 .S27 2017