TY  - BOOK
AU  - Ordoñez,Merlie N.
TI  - Development and validation of worktext in applied mathematics
U1  - 371.33 
PY  - 2011///
CY  - Morong, Rizal
PB  - [publisher not identified]
KW  - Teaching -- Aids and devices
KW  - Mathematics -- Study and teaching
ER  -