TY  - BOOK
AU  - Chew, Terry
TI  - Maths Olympiad : : Advanced (Pr. 5 & 6, suitable for 11-13 yrs. old) 
SN  - 9789812749950 
AV  - QA 253.67 .C529ad 2012
PY  - 2012///.
CY  - Singapore : 
PB  - Singapore Asian Publication, 
ER  -