TY  - BOOK
AU  - Mejia, Leila DP. 
AU  - Gabuyo, Yonard A.
TI  - Plane Trigonometry: a modern approach 
SN  - 9712340872
U1  - Fil 516.24 M479 2004  
PY  - 2004///
CY  - Manila
PB  - Rex Book Store
KW  - Trogonometry.
KW  - Trigonometry-Study and teaching.
N1  - Includes bibliographical references and index
ER  -