TY  - BOOK
AU  - Reyes, Fe N.
AU  - Felix, Rene P.
AU  - Mapa, Felina G.
AU  - Tangco, Jesusa T.
TI  - Trigonometry
SN  - 971-08-4864-X
U1  - Fil. 516.24 T819 1990 
PY  - 1990///
CY  - Metro Manila
PB  - National Book Store Inc.
KW  - Trigonometry
N1  - includes appendix and index
ER  -