TY  - BOOK
AU  - Gabuyo, Yonardo A
AU  - Mejia, Leila D. P.
TI  - Plane trigonometry: a modern approach 
SN  - 9789712361326
AV  - QA533 .G32 2011
PY  - 2011///
CY  - Manila
PB  - Rex Book Store
KW  - Trigonometry, Plane
KW  - Trigonometry
KW  - Problems, exercises, etc
N1  - Includes bibliographical references and index
ER  -