Lao, Joel T.  <br/><br/>
Pre- calculus :  for grade 11 senior high school : Science , teaching , engineering and mathematics./ 
Joel T. Lao  
 - Manila, Philippines :   mindshapers co. ,  c2019. 
 - viii, 196 pages :   illustrations;  25cm. 
<br/><br/>Includes glossary, bibliography and index. 
<br/><br/><label>ISBN: </label>978-621-406-217-1 
<br/><br/><label>Subjects--Topical Terms: </label><br/>1. Mathematics
<br/><br/><label>Dewey Class. No.: </label>Fil. 515 L298p 2019