TY  - BOOK
AU  - SIM Wee Chee
TI  - Maths Challenge: Creative and Critical Thinking Skills 6A
SN  - 978-984-1-4370-67-7
U1  - 511.8 
PY  - 2012///
CY  - Singapore
PB  - Alston
KW  - 0
KW  - Grade 7-9
ER  -