TY  - BOOK
AU  - Guy, Richard K
AU  - Halmos, P.R
TI  - Unsolved problems in number theory. vol. 1
SN  - 0387942890
U1  - 512.7 
PY  - 1994///
CY  - New York
PB  - Springer-Verlag
KW  - Number theory--Problems, exercises, etc
N1  - With 18 figures. unsolved problems in intuitive Mathematics
ER  -