College algebra / 
Leticia L. Castillo ; Flor V. Cejalvo ; Fe n. Reyes ; Jesus T. Tangco 
 - Mandaluyong City :  National Book Store,  2009. 
 - 514 p.; 25.5cm. 
<br/><br/>includes appendix, index 
<br/><br/><label>ISBN: </label>9710870653 
<br/><br/><label>Dewey Class. No.: </label>Fil 512 C697 2009