TY  - BOOK
AU  - Deauna,Melecio C.
AU  - Lamayo,Florita C.
TI  - Basic trigonometry for secondary schools
SN  - 971-24-0046-8
U1  - 516.24 
PY  - 1998///
CY  - Q.C.
PB  - SIBS Publ. Hse.
KW  - Trigonometry
KW  - GEOMETRY
ER  -