TY  - BOOK
AU  - Olson,Steve
TI  - Count down: six kids vie for glory at the world's toughest math competition 
SN  - 0618251413
AV  - QA20.3 O57
U1  - 510/.79 22
PY  - 2004///
CY  - Boston
PB  - Houghton Mifflin
KW  - International Mathematical Olympiad
KW  - Matemáticas
KW  - Competencias
ER  -