TY  - BOOK
AU  - Lao, Joel T. 
TI  - Pre- calculus: for grade 11 senior high school : Science , teaching , engineering and mathematics.
SN  - 978-621-406-217-1
U1  - Fil. 515 L298p 2019 
PY  - 2019///
CY  - Manila, Philippines : 
PB  - mindshapers co.
KW  - 1. Mathematics
N1  - Includes glossary, bibliography and index
ER  -