TY  - BOOK
AU  - Balmeo, Virginia G.
TI  - Worktext in trigonometry for college freshmen
SN  - 9789719553045
PY  - 2012///
CY  - Manila
PB  - Purely Books Trading & Publishing Corporation
KW  - Trigonometry
KW  - sears
N1  - References: p.153
ER  -