00467cam a22001694a 450000500170000000800410001702000180005804100080007608200170008410000200010124500550012125000150017626000340019130000200022544000330024565000190027820250227110144.0040302s2004    nyua     b    001 0 eng    a9781441919281  aeng00a512.7bGUY/U1 aGuy, Richard K.10aUnsolved problems in number theory /cRichard Guy.  a[3rd ed.].  aNew York :bSpringer,cc2004.  axviii, 437 p. : 0aProblem books in mathematics 0aNumber theory.