Andreescu, Titu, et al. <br/><br/>
104 number theory problems 
Titu Andreescu et al. 
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 - Birkhauser, Boston  2010 
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 - .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Number theory-- Algebra-- Mathematics
<br/><br/><label>Dewey Class. No.: </label>512.7  AND-1