Guy, Richard K. <br/><br/>
Unsolved problems in number theory/ 
Richard K. Guy 
 - 3rd ed. 
 - New York ::  Springer,  c2004. 
 - xviii, 437 p. :  ill. ;  24 cm. 
 - (Problem books in mathematics) .
<br/><br/>A. Prime numbers --<br/>B. Divisibility --<br/>C. Additive number theory --<br/>D. Diophantine equations --<br/>E. Sequences of integers --<br/>F. None of the above. 
<br/><br/><label>ISBN: </label>0387208607 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Number theory<br/>Mathematics
<br/><br/><label>Dewey Class. No.: </label>512.7  / RIC/U