TY  - BOOK
AU  - Sundar, Sandhaya.
TI  - Challenging maths: primary 1
SN  - 9789814274562
U1  - TR 372.6 Su721 2011 
PY  - 2011///
CY  - Singapore
PB  - Educational Publishing House Pte Ltd.
KW  - Mathematics
KW  - Mathematics--study and teaching (primary)
ER  -