Andreescu Titu <br/><br/>
104 Number theory problems. 
Andreescu Titu; Andrica Dorin; Feng Zuming 
 - New Delhi  Springer        2007 
 - xii,204p.  cm. 
<br/><br/><label>Standard No.: </label>62713 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>B13, P7