TY  - BOOK
AU  - Dela Fuente, Ruben A.
AU  - Santos, Ronaldo D. ; Sampinto, Bernadette F.
TI  - Plane trigonometry made easy (SI EDITION)
SN  - 971-30-1104-x
U1  - Fil 516.242 D37p 
CY  - Manila 
KW  - Trigonometry, Plane
ER  -