TY  - BOOK
TI  - Math world 1: revised under the K-12 curriculum 
SN  - 9789719968665  
U1  - TR 372.7 M534m 2013 
PY  - 2013///
CY  - Quezon City
PB  - C&E Publishing
KW  - Mathematics--Study and teaching (Elementary)
ER  -