Elementary number theory 
Burton, David M. 
 - 6th ed. 
 -  McGraw-Hill Higher Education,  2007 
 - xiii, 434 p. 
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<br/><br/><label>ISBN: </label>0-07-124425-5 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Number theory.
<br/><br/><label>Dewey Class. No.: </label>512.7 B95e 2007