TY  - BOOK
AU  - Holton, Derek
AU  - 
ED  - 
ED  - 
ED  - 
TI  - Second step to mathematical olympiad problems
T2  - Mathematical olympiad series 
SN  - 9789814327879
U1  - 510.9 
PY  - 2011///
CY  - New Jersey
PB  - World Scientific
KW  - 
ER  -