TY  - BOOK
AU  - Lacsamana-Jensen, Paz Alegria
TI  - Calculations made easy: : addition & multiplication, substraction & division 
SN  - 9789712726484
AV  - 510 L11c 2012 
PY  - 2012///
CY  - Mandaluyong City
PB  - Anvil Publishing, Inc.
KW  - Mathematics
ER  -