TY  - BOOK
AU  - Carvajal, Nelson I.
TI  - The effect of the use of  calculators on the attitudes and  academic achievement of pupils in Mathematics / 
U1  - OCP MAED 0050 2003 
PY  - 2003///
CY  - Paranaque City
PB  - Olivarez College
N1  - Includes reference, appendiox and curriculum vitae
ER  -