Olson, Steve,  1956- <br/><br/>
Count down :  six kids vie for glory at the world's toughest math competition / 
Steve Olson. 
 - Boston :  Houghton Mifflin,  2004. 
 - 244 p. ;  22 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>9780618251414 
<br/><br/><label>LCCN: </label>2003056897 
<br/><br/><label>Subjects--Meeting Names: </label><br/>International Mathematical Olympiad.
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics--Competitions.<br/>Matemática (Estudo e Ensino)
<br/><br/><label>LC Class. No.: </label>QA20.3  / .O47 2004 
<br/><br/><label>Dewey Class. No.: </label>510.76  / O52c