Zhang, Yao  <br/><br/>
Combinatorial problems in mathematical  competitions  

 - Shanghai  East china normal university  2011 
 - xii, 289p. 
 - (Mathematical olympiad) .
<br/><br/> v.4 
<br/><br/><label>ISBN: </label>9789812839497 
<br/><br/><label>Subjects--Index Terms: </label>Combinational analysis Mathematical competitions 
<br/><br/><label>Universal Decimal Class. No.: </label>519.101  / ZHA