TY  - BOOK
TI  - Plane trigonometry a calculator approach
SN  - 9789719533856
PY  - 2012///
CY  - Manila: Philippines,
PB  - Purely Books Trading & Pub., Co.
KW  - Plane trigonometry
KW  - c2012
KW  - Manila
KW  - Newsprint
KW  - sears
ER  -