Andreescu, Titu  _ Gelca, Razvan <br/><br/>
Mathematical olympiad challenges 

 - 2nd ed 
 - Boston  Birkhauser  2009 
 - xii,283p.  PB  24cm. 
<br/><br/><label>ISBN: </label>9780817645281 
<br/><br/><label>Subjects--Personal Names: </label>   _ 
<br/><br/><label>Dewey Class. No.: </label>510.76  / AND