TY  - BOOK
AU  - Castillo,Aida C.
AU  - Reyes,Myrna D.
TI  - Modules in plane trigonometry
SN  - 971-8581-56-1
U1  - 516.242 
CY  - Q.C.
PB  - Great Books.
KW  - Trigonometry
KW  - GEOMETRY
ER  -