TY  - BOOK
AU  - Carpio, Joy N. & Guillermo, Jaymie M.
TI  - Plane trigonometry
SN  - 978-971-23-6822-6
U1  - Fil. 516 C228 C2014 
PY  - 2014///
CY  - Philippines
PB  - REX Book Store
ER  -